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-   -   Sequence terminations and merges (https://www.mersenneforum.org/showthread.php?t=11837)

frmky 2010-03-14 05:52

633060 terminates.

10metreh 2010-03-14 07:26

[QUOTE=frmky;208336]633060 terminates.[/QUOTE]

Bug in DB: line 3283 is one of those "C" numbers.

Batalov 2010-03-14 10:06

197208 terminates
 
It's been a while since we terminated something small, wasn't it?
(Yes, of course, there was the magnificent 92898.)

Anyway, [URL="http://factordb.com/aliquot.php?type=1&aq=197208"]197208[/URL] terminates with 601 at i3611.
:george::maybeso::george::joe o::george:

[SIZE=1](factorDB has a broken C5 along the way, but never mind that.)[/SIZE]
[SIZE=1][/SIZE]

frmky 2010-03-23 03:11

904386 merges with 550816

frmky 2010-03-30 23:12

925740 terminates.

frmky 2010-04-02 07:44

938574 terminates.

unconnected 2010-04-05 17:17

[URL="http://factordb.com/aliquot.php?type=1&aq=33672&big=1"]33672[/URL] terminates. Max height = 108.

Batalov 2010-04-05 18:24

:wblipp: Wizard! Congratulations!

wolfcrey 2010-04-06 07:36

[quote=unconnected;210659][URL="http://factordb.com/aliquot.php?type=1&aq=33672&big=1"]33672[/URL] terminates. Max height = 108.[/quote]

Fantastic result. Congratulatios!

unconnected 2010-04-12 08:45

[URL="http://factordb.com/aliquot.php?type=1&aq=921232&big=1"]921232[/URL] terminates at index 6358. And max height was 127 :w00t:

10metreh 2010-04-12 08:57

Termination 97, and...

New record height for terminations! :party:

:george: :george:

That was one of the records that I've always hoped we would achieve. Now we've done it. :smile:

I'm not at home, but when I first get onto the computer after returning (probably tomorrow morning), I'll email this to Clifford Stern. He'll probably try his hardest to beat it quickly :smile:

Meanwhile, the next record to break will be the highest downdriver capture record of 145 digits (by Paul Zimmermann on 660) that has stood for nearly 4 years. Maybe 4788 will break that one!

However, the thing that I would really like to see this project do is find a sequence which merges with either itself or one of its own side-sequences. Unfortunately axn's project to extend 1M-4M to 71 digits failed to find one, but that doesn't mean that there isn't one out there. It would be nice to break the record length of an aliquot cycle - the record of 28 terms has stood for 92 years.

wolfcrey 2010-04-12 15:08

[quote=10metreh;211471]Termination 97, and...

New record height for terminations! :party:

:george: :george:

That was one of the records that I've always hoped we would achieve. Now we've done it. :smile:

I'm not at home, but when I first get onto the computer after returning (probably tomorrow morning), I'll email this to Clifford Stern. He'll probably try his hardest to beat it quickly :smile:

Meanwhile, the next record to break will be the highest downdriver capture record of 145 digits (by Paul Zimmermann on 660) that has stood for nearly 4 years. Maybe 4788 will break that one!

However, the thing that I would really like to see this project do is find a sequence which merges with either itself or one of its own side-sequences. Unfortunately axn's project to extend 1M-4M to 71 digits failed to find one, but that doesn't mean that there isn't one out there. It would be nice to break the record length of an aliquot cycle - the record of 28 terms has stood for 92 years.[/quote]

Wonderful idea and a new record, really
Wolfgang

Batalov 2010-04-15 17:08

[URL="http://factordb.com/search.php?se=1&aq=834216"]834216[/URL] merges with 568156 at i2707, which in turn terminates after another 1197 iterations. So you can mark it terminated. Max.height 115.

smh 2010-07-15 11:42

[URL="http://factorization.ath.cx/search.php?se=1&aq=90480&action=last20&fr=&to="]90480[/URL] terminates

10metreh 2010-07-15 17:55

[QUOTE=smh;221444][URL="http://factorization.ath.cx/search.php?se=1&aq=90480&action=last20&fr=&to="]90480[/URL] terminates[/QUOTE]

Have you emailed Clifford Stern?

smh 2010-07-16 08:40

[QUOTE=10metreh;221478]Have you emailed Clifford Stern?[/QUOTE]No

schickel 2010-07-16 11:01

[QUOTE=smh;221578][QUOTE=10metreh;221478]Have you emailed Clifford Stern?[/QUOTE]No[/QUOTE]I did last night. I send terminations along as they accumulate. Unfortunately, we haven't been accumulating very many lately....

Mini-Geek 2010-10-28 03:08

[QUOTE=schickel;172483][code][B]Sequence Who When Max. ht. Length Type[/B]
1000336 bchaffin 27 Oct 2010 107 5146 Prime[/code][/QUOTE]

I'll note that this merged with 7596 a while before it terminated, but 7596 didn't quite make it to 100 digits, so I'll just count this as a prime termination.

Batalov 2010-11-12 01:07

[URL="http://www.factordb.com/sequences.php?se=1&eff=2&aq=707016&action=last20&fr=0&to=100"]707016[/URL] terminates (max height 124)

schickel 2010-11-12 06:27

[QUOTE=Batalov;236733][URL="http://www.factordb.com/sequences.php?se=1&eff=2&aq=707016&action=last20&fr=0&to=100"]707016[/URL] terminates (max height 124)[/QUOTE]Man, not only do you get another one, but it looks like this comes in at [B][I][COLOR="Blue"]#3[/COLOR][/I][/B] in number of lines [B]and[/B] drop in number of digits for the downdriver run!

unconnected 2010-11-12 07:59

[QUOTE=Batalov;236733][URL="http://www.factordb.com/sequences.php?se=1&eff=2&aq=707016&action=last20&fr=0&to=100"]707016[/URL] terminates (max height 124)[/QUOTE]
Congratulations! Awesome result!

10metreh 2010-11-12 08:02

I believe that that was this project's 100th termination below 1000000! :bounce wave:

schickel 2010-11-21 03:09

Are you working the 430-500k range also, Robert? I provisionally put you down for the work on these last two.....

bchaffin 2010-11-21 21:29

A few tidbits from the 1M+ range:

1001880 merges with 8092 (which then merges with 4788) at term 1840, after reaching a peak of 87 digits at term 712.

1017156 merges with 131440 at term 1193, after reaching a peak of 96 digits at term 726.

1001232 terminates after 3979 terms, after reaching a maximum of 103 digits at term 2992.

1011520 terminates after 2718 terms, after reaching two different peaks of 83 digits.

Mini-Geek 2010-11-21 23:09

[QUOTE=bchaffin;238142]A few tidbits from the 1M+ range:[/QUOTE]

Just to clarify for updating the first post:
1. Was this work yours, or if not whose was it?
2. Do we have dates or should we do like a couple there already and put today and an * for "* Date given is date of discovery upon review of DB."

bchaffin 2010-11-22 00:35

[QUOTE=Mini-Geek;238163]Just to clarify for updating the first post:
1. Was this work yours, or if not whose was it?
2. Do we have dates or should we do like a couple there already and put today and an * for "* Date given is date of discovery upon review of DB."[/QUOTE]

Right, sorry that wasn't clear -- yes, this was my work. Here are the dates, according to my log files:
1001880: 10/30/2010
1017156: 11/21/2010
1001232: 10/29/2010
1011520: 11/12/2010

schickel 2010-12-02 08:53

Found another three terminations on in the 400-500k range, and got one correction from Clifford for 453404:[code]453404i2404 = 334440:i2 = 1605060[/code]Didn't find that last one myself since the DB isn't tracking merges yet....

schickel 2010-12-02 09:08

[QUOTE=schickel;239637][code]453404i2404 = 334440:i2 = 1605060[/code]Didn't find that last one myself since the DB isn't tracking merges yet....[/QUOTE]And in a unique bit of irony, if you check Wieb Bosma's page, he gave up on 334440 at a height of 102.....thereby missing out on a termination from triple digit territory!!!

Batalov 2010-12-02 09:43

The cycle! Nice (even though not entirely novel)!!

schickel 2010-12-04 03:43

Found two more terminations in the 600-700k range.

I wonder, will the DB finish off a sequence on its own, as it were? IOW, if the max height stays under a reasonable amount, does a sequence stay active if factors are turned in by the local workers or the volunteer workers?

If so, I wonder if we can chalk a couple of these up to the DB since they never got very high....

schickel 2010-12-04 04:27

Found one in the 700-800k range. fivemack was the last one working it, but apparently [URL="http://www.mersenneforum.org/showpost.php?p=200614&postcount=451"]released[/URL] it. Would you have kept working on it, Tom?

bchaffin 2010-12-04 05:16

[QUOTE=schickel;239964]Found two more terminations in the 600-700k range.

I wonder, will the DB finish off a sequence on its own, as it were? IOW, if the max height stays under a reasonable amount, does a sequence stay active if factors are turned in by the local workers or the volunteer workers?

If so, I wonder if we can chalk a couple of these up to the DB since they never got very high....[/QUOTE]

474750 was me -- I forgot I had turned off merge detection, and it's the same as 1011520 which I previously reported.

As far as I can tell, the DB will not extend sequences on its own. However, say the last DB term in a sequence contains composite X. If a worker factors X, the DB won't notice on its own. But when someone queries that sequence, the DB discovers that it now knows those factors, and reports the new term -- or possibly terms since it does some very quick checks for small factors, and those may succeed in fully factoring the number. If the new last term contains a smallish composite, that is now added to the DB and will be picked up by the workers.

So if a sequence never has a composite above a certain size (91 digits at the moment), it may gradually get extended just by people scanning the DB. For the recent finds which top out at <90 digits, that's quite possible.

Finally, one new termination (which I think is not a merge with anything smaller):

1023672 terminates after 1197 terms, after reaching a peak of 97 digits at term 607.

wolfcrey 2010-12-04 15:06

[QUOTE=schickel;239967]Found one in the 700-800k range. fivemack was the last one working it, but apparently [URL="http://www.mersenneforum.org/showpost.php?p=200614&postcount=451"]released[/URL] it. Would you have kept working on it, Tom?[/QUOTE]

Clifford Stern terminated this sequence (757512) in 20th of May 2010

RobertS 2010-12-04 15:18

not listed by WB:
[URL="http://factordb.com/sequences.php?se=1&eff=2&aq=334280&action=last&fr=0&to=100"]334280[/URL] terminates
[URL="http://factordb.com/sequences.php?se=1&eff=2&aq=386310&action=last&fr=0&to=100"]386310[/URL] probably merges

Edit: 1000336i1 merges with 334280i10

schickel 2010-12-04 15:39

[QUOTE=wolfcrey;239995]Clifford Stern terminated this sequence (757512) in 20th of May 2010[/QUOTE]Thanks for catching that....forgot to double check against Clifford's list....

RobertS 2010-12-04 15:56

[QUOTE=bchaffin;239972]474750 was me -- I forgot I had turned off merge detection, and it's the same as 1011520 which I previously reported.
[/QUOTE]

Not me

bchaffin 2010-12-04 17:36

478392 terminates after 1567 terms. Max height is 83 digits at term 887.

schickel 2010-12-05 07:46

[strike]Found two more, this time in the 600-700k range" 649320 & 654720.

[SIZE="1"]And I cross-checked Clifford's list already to spare my getting egg on my face again![/SIZE][/strike]

Never mind! I was looking at the wrong notes. :blush:

schickel 2010-12-05 08:22

Shoot, go to work and forget all about what I was doing and then come home and make a post that makes me look like a fool.....sure would be nice if I didn't have to work!

I actually finished 900k and didn't find anything else unexpected and am checking 800k. I'm pulling 100-200k right now, since I hadn't done that yet, but unril more turn up in 300-500lk, it looks like we might have everything current. I'll post counts to compare with others to make sure that I didn't miss anything.

schickel 2010-12-06 06:55

OK, checking the 800-900k range, I found a few more. Unless he says otherwise, I'm going to mark RobertS down for these and put just "May 2010" for the date, unless there are logs available....[code] 862980 RobertS May 2010 85 2909 Prime
865110 RobertS May 2010 91 2723 Prime
862944 RobertS May 2010 98 2364 Prime
836202 RobertS May 2010 82 1074 Prime
875328 RobertS May 2010 87 2801 Prime[/code]

Wolfgang, if the DB still has a problem generating elf files, let me know and I can email you these sequences.

kar_bon 2010-12-06 10:38

Yesterday I've created some scripts to get the data from the FactorDB and found these sequences terminated:

334280, 411960, 475440, 603204, 605682, 691096, 859368

I've updated all my Summary pages with those new terminations and others from the 1st. post here.

I've not yet check for any new merges so far.

schickel 2010-12-06 12:19

[QUOTE=kar_bon;240251]Yesterday I've created some scripts to get the data from the FactorDB and found these sequences terminated:

334280, 411960, 475440, 603204, 605682, 691096, 859368

I've updated all my Summary pages with those new terminations and others from the 1st. post here.

I've not yet check for any new merges so far.[/QUOTE]It's probably good that we're doing this....

334280 posted about [URL="http://www.mersenneforum.org/showpost.php?p=239997&postcount=131"]here[/URL], but not copied to the first message.

411960 [URL="http://www.mersenneforum.org/showpost.php?p=199909&postcount=66"]here[/URL].

You posted about 475440, 603204, 691096, and 859368 [URL="http://www.mersenneforum.org/forumdisplay.php?f=90"]here[/URL].

Greebley found [URL="http://www.mersenneforum.org/forumdisplay.php?f=90"]605682[/URL] terminated already.

I used your summary pages as a starting point and culled out all that you had flagged as terminating or merging, then I searched here (and later on Clifford's page) for mention of any before I posted the extra ones I found.

It seems that all these weren't copied to the first message, though, so I'll do that later in the week if no one else does.

Also: Wolfgang, can you post updated counts for each of the ranges after you update everything. It would be nice to get a verified count of the open sequences. (We could also update [URL="http://en.wikipedia.org/wiki/Aliquot_sequence"]Wikipedia[/URL]....)

wolfcrey 2010-12-06 22:28

There are 9294 open-end-sequences in [1, 1000000].
David Moews summed up 193 cycles, 182 of the oder 4.

schickel 2010-12-07 10:50

[QUOTE=kar_bon;240478]834372 merges at i=1935 (467728) with 431424 at i=1854.

And 431424 merges at i=1853 (405232) with 5208 at i=10.[/QUOTE]Cross-posted.....

schickel 2010-12-08 13:22

[QUOTE=wolfcrey;240382]There are 9294 open-end-sequences in [1, 1000000].
David Moews summed up 193 cycles, 182 of the oder 4.[/QUOTE]Do you have a text file or spreadsheet listing everything? I ended up with different counts, so obviously I'm missing a few terminations/merges, and a list would make it a little easier to trim my files.

wolfcrey 2010-12-08 16:33

[QUOTE=schickel;240699]Do you have a text file or spreadsheet listing everything? I ended up with different counts, so obviously I'm missing a few terminations/merges, and a list would make it a little easier to trim my files.[/QUOTE]

I realized this merge just now: [FONT=Arial]834372:i1935 = 431424:i1854 = 5208:i10 = 467728[/FONT]
[FONT=Arial]Karsten found it, isn't it?[/FONT]
[FONT=Arial]On my website I set a link to a list of all OE-sequences (there are 9293 now):[/FONT]
[FONT=Arial][URL="http://www.aliquot.de/tabellen/1-1moe"]www.aliquot.de/tabellen/1-1moe[/URL][/FONT]
[FONT=Arial]I hope this will help you and us all if the information will come back.[/FONT]

kar_bon 2010-12-08 19:04

[QUOTE=wolfcrey;240738]I realized this merge just now: [FONT=Arial]834372:i1935 = 431424:i1854 = 5208:i10 = 467728[/FONT]
[FONT=Arial]Karsten found it, isn't it?[/FONT]
[/QUOTE]

No, I've only posted the merge-index here.

schickel 2010-12-08 21:58

[QUOTE=wolfcrey;240738]I realized this merge just now: [FONT=Arial]834372:i1935 = 431424:i1854 = 5208:i10 = 467728[/FONT]
[FONT=Arial]Karsten found it, isn't it?[/FONT]
[FONT=Arial]On my website I set a link to a list of all OE-sequences (there are 9293 now):[/FONT]
[FONT=Arial][URL="http://www.aliquot.de/tabellen/1-1moe"]www.aliquot.de/tabellen/1-1moe[/URL][/FONT]
[FONT=Arial]I hope this will help you and us all if the information will come back.[/FONT][/QUOTE]Thank you. I'll compare that to my lists and see what I have that's extra....

kar_bon 2010-12-08 22:16

[QUOTE=wolfcrey;240738]
[FONT=Arial][URL="http://www.aliquot.de/tabellen/1-1moe"]www.aliquot.de/tabellen/1-1moe[/URL][/FONT]
[FONT=Arial]I hope this will help you and us all if the information will come back.[/FONT][/QUOTE]

Wolfgang, your given file and my downloadable list from [url=http://www.rieselprime.de/Others/AliquotIntro.htm]here[/url] contain both the same open sequences.

schickel 2010-12-09 21:19

With thanks to Wolfgang and Karsten, I've got my list double-checked. I found some sequences that I had missed and a few that I had duplicated.

[QUOTE=10metreh;240270]I suspect there are more side-sequences in that list.[/QUOTE]While waiting for the local telco to show, I had a chance to shake the sequence summary a little and see what fell out, and yes, there were several more that I found upon further review.[code]280032:i1600 = 6552:i4 = 78720
493410:i814 = 228522:i1626 = 1785616
773000:i2 = 445464:i848 = 1506320[/code]These were the easy ones to find. They're evident when looking at the list sorted by length; the guiding/driving form on these have the same 4 or 5 small factors....

There may be more hiding in there that could be tracked down with a more automated check. I posted the summary file [URL="ftp://ftp.frontiernet.net/pub/users/aliquot/public_ftp/AllSeq.zip"]here[/URL].

kar_bon 2010-12-09 21:40

[QUOTE=schickel;241004][code]493410:i814 = 228522:i1626 = 1785616
[/code][/QUOTE]

This one I've listed "found by mataje on 2009-07-23" on my Summary pages.
Wolfgang lists this, too, but without date and finder.

I've updated my list with now 9291 OES < n=1000000.

schickel 2010-12-09 21:46

[QUOTE=kar_bon;241007]This one I've listed "found by mataje on 2009-07-23" on my Summary pages.
Wolfgang lists this, too, but without date and finder.

I've updated my list with now 9291 OES < n=1000000.[/QUOTE]Well, shucks, if your count is good, then I still have one little soldier missing....off to troll the list again!

kar_bon 2010-12-09 21:49

[QUOTE=schickel;241012]Well, shucks, if your count is good, then I still have one little soldier missing....off to troll the list again![/QUOTE]

Seems 495360!

schickel 2010-12-09 22:02

[QUOTE=schickel;241012]Well, shucks, if your count is good, then I still have one little soldier missing....off to troll the list again![/QUOTE]Found it! 495360 was missing from my file. OK, now I think I have them all. Updated file uploaded.

[size="1"]Yeah, kar_bon beat me to finding it....[/size]

wolfcrey 2010-12-10 16:07

With all updates there are now 9291 OE-sequences and 194 cycles with higher order (4 or more). David Moews updated his list, too.

schickel 2010-12-10 16:57

[QUOTE=wolfcrey;241109]With all updates there are now 9291 OE-sequences and 194 cycles with higher order (4 or more). David Moews updated his list, too.[/QUOTE]So that means that if we terminated ~125 sequences in the ~1.5 years we've been really active, we need only 112 more years or so to terminate everything....:grin:

Andi47 2010-12-10 17:04

[QUOTE=schickel;241114]So that means that if we terminated ~125 sequences in the ~1.5 years we've been really active, we need only 112 more years or so to terminate everything....:grin:[/QUOTE]

plus or minus epsilon where epsilon is unknown :wink:

bchaffin 2010-12-11 16:19

461430 terminates after 2623 terms. Max height is 100 digits at term 1882.

schickel 2010-12-12 06:45

[QUOTE=bchaffin;241291]461430 terminates after 2623 terms. Max height is 100 digits at term 1882.[/QUOTE]Wow, if you keep churning through the 400s as fast as you have been, that means we will be able to fill in everything under 1M on our own....awesome work!

:bow wave::bow wave:

bchaffin 2010-12-12 17:18

[QUOTE=schickel;241405]Wow, if you keep churning through the 400s as fast as you have been, that means we will be able to fill in everything under 1M on our own....awesome work![/QUOTE]

Thanks! I'm moving along... should be done later this week I think. Here's another one, which the DB workers would have finished off pretty quickly if I hadn't gotten to it:

471540 terminates after 2177 terms. Max height is 84 digits at term 492.

bchaffin 2010-12-12 23:42

And another from the 400k range -- this is a good weekend for me!

466560 terminates after 2907 terms. Max height is 97 digits at term 945.

Batalov 2010-12-13 00:09

[QUOTE=bchaffin;241500]... Max height is [B]97[/B] digits at term 945.[/QUOTE]
(and other messages similar to that)

Was this [URL="http://mersenneforum.org/showpost.php?p=166068&postcount=1"]work distribution map[/URL] thrown out of the window then?
I somehow always thought that [B]97[/B] < 100, 84 < 100...

bchaffin 2010-12-13 17:39

[QUOTE=Batalov;241502]
Was this [URL="http://mersenneforum.org/showpost.php?p=166068&postcount=1"]work distribution map[/URL] thrown out of the window then?
I somehow always thought that [B]97[/B] < 100, 84 < 100...[/QUOTE]

I've been extending the sequences from 400k-500k to 100 digits based on the discussion in [URL="http://www.mersenneforum.org/showthread.php?t=14271"]this thread[/URL].

wolfcrey 2010-12-13 17:54

[QUOTE=bchaffin;241643]I've been extending the sequences from 400k-500k to 100 digits based on the discussion in [URL="http://www.mersenneforum.org/showthread.php?t=14271"]this thread[/URL].[/QUOTE]
Good luck and my congratulations for terminating several sequences.

bchaffin 2010-12-13 19:51

I've done a scrub of shickel's latest AllSeq.txt file and I think I found a few more merges and one omission:

360522.3167 merges with 66144.8
431424.1853 merges with 5208.9
431472 is missing
442580.1119 merges with 427600.0
453516.1196 merges with 11408.10
472836.2284 merges with 32064.173

The last one (472836) I found yesterday -- it grows to 99 digits before decreasing all the way back down to 6. But the other 400k ones aren't in my logs anywhere. Maybe with all the DB scanning folks have been doing recently, the workers pushed them forward.

schickel 2010-12-13 20:38

[QUOTE=bchaffin;241655]I've done a scrub of shickel's latest AllSeq.txt file and I think I found a few more merges and one omission:

360522.3167 merges with 66144.8
431424.1853 merges with 5208.9
431472 is missing
442580.1119 merges with 427600.0
453516.1196 merges with 11408.10
472836.2284 merges with 32064.173

The last one (472836) I found yesterday -- it grows to 99 digits before decreasing all the way back down to 6. But the other 400k ones aren't in my logs anywhere. Maybe with all the DB scanning folks have been doing recently, the workers pushed them forward.[/QUOTE]Thanks for that. I figured there might be some more in there, but spot checking by hand wasn't going to cut it. I was planning on trying to get something automated going this week, but you let me avoid having to do that.

10metreh 2010-12-17 18:40

[QUOTE=Batalov;241502](and other messages similar to that)

Was this [URL="http://mersenneforum.org/showpost.php?p=166068&postcount=1"]work distribution map[/URL] thrown out of the window then?
I somehow always thought that [B]97[/B] < 100, 84 < 100...[/QUOTE]

The other mods seem not to pay much attention to that post, and I think I'm the only one who regularly updates it. However, as I mysteriously lost my mod status in September and just as mysteriously got it back only a few days ago, I couldn't change that post.

schickel 2010-12-27 10:51

(I bet you all check here first!)

Had you going for a second, didn't I? This is just a reminder that there's only one week left if you want to get in any last-minute terminations for the year :grin:

schickel 2010-12-27 10:54

[QUOTE=Batalov;241502](and other messages similar to that)

Was this [URL="http://mersenneforum.org/showpost.php?p=166068&postcount=1"]work distribution map[/URL] thrown out of the window then?
I somehow always thought that [B]97[/B] < 100, 84 < 100...[/QUOTE]Yes, actually, it was, kind of. Wieb Bosma never got back in touch with us on uploading his data to the factor DB, so we (bchaffin and RobertS, mainly) had to go out and recreate it....no choice, really.

We also found terminations that he may have found previously, but since he hasn't updated his status pages since last year, we knew nothing of....

schickel 2010-12-28 08:27

Last one for the year?
 
10 metreh found this one:[code]645428:i1959 = 354204:i83 = 3279634[/code]Nice drop: all the way down to 7 digits!

schickel 2011-01-06 06:23

First for the year!
 
Looks like Clifford gets the first termination for the year!

233502 terminates in 347.

schickel 2011-01-14 18:00

Caught this one last night, saw it this morning:

[B]304590:i2908 = 193480:i17 = 12118768[/B]


:party: :party:

RobertS 2011-02-09 08:27

[URL="http://factordb.com/aliquot.php?type=1&aq=373152&big=1"]373152[/URL] terminated :smile:

max height at i375: 112 digits!

schickel 2011-02-09 09:14

[QUOTE=RobertS;251900][URL="http://factordb.com/aliquot.php?type=1&aq=373152&big=1"]373152[/URL] terminated :smile:

max height at i375: 112 digits![/QUOTE]Actually, I think this might be chalked up as a merge, rather than a straight termination......[code] 1017 . 215626 = 2 * 131 * 823
1018 . 110678 = 2 * 55339
1019 . 55342 = 2 * 7 * 59 * 67
1020 . 42578 = 2 * 61 * 349
1021 . 22522 = 2 * 11261
1022 . 11264 = 2^10 * 11
1023 . 13300 = 2^2 * 5^2 * 7 * 19
1024 . 21420 = 2^2 * 3^2 * 5 * 7 * 17
1025 . 57204 = 2^2 * 3^2 * 7 * 227
1026 . 108780 = 2^2 * 3 * 5 * 7^2 * 37[/code]I'm not sure which one it merged with, though.....I need to do a little more research.

kar_bon 2011-02-09 09:21

[QUOTE=schickel;251907]I'm not sure which one it merged with, though.....I need to do a little more research.[/QUOTE]

373152:i1022 = 11264 = 6160:i3

Reference: W.Creyaufm├╝llers C9C30.xls

schickel 2011-02-09 09:24

[QUOTE=kar_bon;251908]373152:i1022 = 11264 = 6160:i3

Reference: W.Crayaufm├╝llers C9C30.xls[/QUOTE]Thanks, that was quick work!

Nice one.....another merge with 6160!!!!

schickel 2011-02-23 03:37

1 Attachment(s)
Guess what Clifford found?

From 986070:[code] 1471 . 6145 = 5 * 1229
1472 . 1235 = 5 * 13 * 19
1473 . 445 = 5 * 89
1474 . 95 = 5 * 19
1475 . 25 = 5^2
1476 . 6 = 2 * 3
1477 . 6 = 2 * 3[/code]

bchaffin 2011-03-01 20:46

Reposting here... in [URL="http://www.mersenneforum.org/showpost.php?p=253976&postcount=84"]this post[/URL] from the subproject #9 thread, unconnected found that 172340 merges. According to my script, it merges with 5208:

172340.2043 merges with 5208.6

schickel 2011-03-02 07:58

[QUOTE=bchaffin;254117]Reposting here... in [URL="http://www.mersenneforum.org/showpost.php?p=253976&postcount=84"]this post[/URL] from the subproject #9 thread, unconnected found that 172340 merges. According to my script, it merges with 5208:

172340.2043 merges with 5208.6[/QUOTE]Sorry, I just now finished my work week and will have a chance to get things updated that haven't been updated......

[Edit: Looks like Mini-Geek got it already.]

schickel 2011-03-16 21:29

1 Attachment(s)
After mining a couple more downdriver nuggets from the DB, here is this diamond in the rough.....[B]smh[/B] calculated this one from 80 (?) to 100 digits for subproject #2, I found it just after it captured the downdriver at 107 digits:

wolfcrey 2011-03-17 10:42

[QUOTE=schickel;255353]After mining a couple more downdriver nuggets from the DB, here is this diamond in the rough.....[B]smh[/B] calculated this one from 80 (?) to 100 digits for subproject #2, I found it just after it captured the downdriver at 107 digits:[/QUOTE]

Congratulations, it's a pretty good result
Wolfgang

unconnected 2011-03-18 15:46

[URL="http://factordb.com/aliquot.php?type=1&aq=637176&big=1"]637176[/URL] terminates.

unconnected 2011-03-22 09:50

[URL="http://factordb.com/aliquot.php?type=1&aq=765380&big=1"]765380[/URL] terminates.

[size="1"][color="blue"]Link fixed.[/color][/size]

schickel 2011-03-22 09:58

[QUOTE=unconnected;256338][URL="http://factordb.com/aliquot.php?type=1&aq=765380&big=1"]765380[/URL] terminates. [/QUOTE]Looks like you're having most of the luck lately!

Looks like we're almost to 150! (138 and counting....)

:party:

Greebley 2011-03-22 15:43

My first termination/merge in a while: 170040 merges with 14022, Index 2701 of 170040 matches index 19 of 14022

The minimum value of the sequence is 67060 at index 2318. The maximum is 108 digits.

The Graph:
[URL]http://factorization.ath.cx/aliquot.php?type=1&aq=170040&big=1[/URL]

bchaffin 2011-03-26 23:00

Got one!
 
1 Attachment(s)
After factoring nearly 70k composites, the workers finally score!

407940.2935 merges with 164556.19

bchaffin 2011-04-01 14:12

1 Attachment(s)
Unless someone else claims responsibility, I think 637176 was terminated by my workers... sort of. I added about 50 terms and left it at term 823 with a c101. A few hours later I rechecked it in the DB, and it was done. Scanning through the rest of the terms, they almost all have quick factorizations that maybe could have been done by the DB just as a side-effect of the query...

Anyway, 637176 is done -- no joke!

bchaffin 2011-04-01 19:07

Never mind, I mis-grepped my logs and didn't notice that unconnected had 637176 reserved until recently, so it must have been his work (which makes more sense). My workers picked it up again after it disappeared from the reservations list, and noticed that it was done.

Sorry to steal your thunder, unconnected! :redface:

Batalov 2011-04-11 23:02

1 Attachment(s)
[URL="http://factordb.com/sequences.php?se=1&eff=2&aq=430884&action=last20&fr=0&to=100"]430884[/URL] terminates with 191 (first, merges with 248582 at i4998).

Kinda looks like the view from my window :-)
[ATTACH]6459[/ATTACH]

schickel 2011-04-12 06:31

[QUOTE=Batalov;258255][URL="http://factordb.com/sequences.php?se=1&eff=2&aq=430884&action=last20&fr=0&to=100"]430884[/URL] terminates with 191 (first, merges with 248582 at i4998).

Kinda looks like the view from my window :-)
[ATTACH]6459[/ATTACH][/QUOTE]Nice one!

RobertS 2011-04-13 08:17

[URL="http://factordb.com/sequences.php?se=1&eff=2&aq=219282&action=last&fr=0&to=100"]219282[/URL] terminates with 601

bchaffin 2011-04-13 14:24

[QUOTE=RobertS;258375][URL="http://factordb.com/sequences.php?se=1&eff=2&aq=219282&action=last&fr=0&to=100"]219282[/URL] terminates with 601[/QUOTE]

I think that was me, unless you were also working that one in parallel (I didn't have it reserved).

bchaffin 2011-04-13 15:32

[QUOTE=bchaffin;258407]I think that was me, unless you were also working that one in parallel (I didn't have it reserved).[/QUOTE]

Edit (just missed the edit window): hmm, there are some mysterious gaps in my worker's logs, so maybe we were both adding factors at the same time... I picked up the downdriver at 219282.1969, but it dropped ~10 digits with 2^2 some time before that. Anyway, another one down!

bchaffin 2011-04-22 00:23

1 Attachment(s)
715590.2849 merges with 4116.3!

That's the first time I've ever actually watched a sequence end/merge. Cool.

wolfcrey 2011-04-22 03:28

[QUOTE=bchaffin;259245]715590.2849 merges with 4116.3!

That's the first time I've ever actually watched a sequence end/merge. Cool.[/QUOTE]

Just back from hollyday I found this message - congratulations
Wolfgang

RobertS 2011-04-26 08:55

[URL="http://factordb.com/sequences.php?se=1&eff=2&aq=275892&action=last&fr=0&to=100"]275892[/URL] terminates with 59

schickel 2011-05-07 04:20

Just reported to me by Clifford: [URL="http://factordb.com/aliquot.php?type=1&aq=649248&big=1"]649248[/URL] terminates in 281.


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