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-   -   Sierp base 3 - mini-drive Ia (https://www.mersenneforum.org/showthread.php?t=10506)

 gd_barnes 2008-07-28 07:43

Sierp base 3 - mini-drive Ia

We have started a mini drive for Sierp base 3. The range is k<50M and n=35K-100K.

There were 154 k's remaining to begin with. The drive found 81 k's with primes so there are now 73 k's remaining for this k-range.

This is a very low-intensity drive. The files are small and you should be able to complete files at the current n-range in 4-7 days. Feel free to grab several if you like. As we find primes, like I did with primes that were previously found, we'll remove k's from files for larger n-ranges. Files up to n=100K are fully sieved to P=175G.

Primes found:
[code]
prime found by
23243282*3^99009+1 Flatlander
29548672*3^96142+1 Flatlander
35382962*3^93533+1 Flatlander
48652642*3^92392+1 Flatlander
39809884*3^91905+1 Flatlander
28071866*3^91455+1 Flatlander
26261252*3^91020+1 Flatlander
30440162*3^90938+1 Flatlander
40809266*3^89759+1 Flatlander
9690724*3^87558+1 Flatlander
44249222*3^85781+1 henryzz
21175348*3^84575+1 em99010pepe
7111766*3^84512+1 em99010pepe
41118464*3^82674+1 em99010pepe
8090242*3^81633+1 em99010pepe
47214478*3^80452+1 em99010pepe
36173524*3^78327+1 em99010pepe
16693364*3^77129+1 em99010pepe
39834376*3^76224+1 nuggetprime
25207316*3^76109+1 nuggetprime
29450654*3^76010+1 nuggetprime
26393956*3^75239+1 nuggetprime
42497116*3^75136+1 nuggetprime
46490116*3^74892+1 nuggetprime
9240646*3^74356+1 nuggetprime
29348458*3^71822+1 michaf
9483244*3^65267+1 michaf
11242904*3^64614+1 michaf
42216418*3^64227+1 michaf
10224166*3^59777+1 em99010pepe
14994106*3^57376+1 em99010pepe
3938414*3^56779+1 em99010pepe
34960988*3^56350+1 em99010pepe
20856328*3^56338+1 em99010pepe
46511144*3^56138+1 em99010pepe
28964426*3^52608+1 em99010pepe
24925372*3^51893+1 em99010pepe
40316644*3^51786+1 em99010pepe
6859514*3^51502+1 em99010pepe
48886226*3^51212+1 em99010pepe
11785058*3^50252+1 em99010pepe
6123394*3^49821+1 em99010pepe
24763868*3^49675+1 em99010pepe
41443828*3^49528+1 em99010pepe
35164256*3^47916+1 em99010pepe
48563402*3^47888+1 em99010pepe
15895156*3^47532+1 em99010pepe
12087826*3^47344+1 em99010pepe
48501008*3^46896+1 em99010pepe
5574644*3^46587+1 em99010pepe
8828234*3^46265+1 em99010pepe
15396762*3^46233+1 em99010pepe
24725744*3^46211+1 em99010pepe
10504636*3^46184+1 em99010pepe
38804354*3^45875+1 em99010pepe
37160146*3^45496+1 em99010pepe
37158138*3^45035+1 em99010pepe
30237632*3^44437+1 em99010pepe
19947516*3^44420+1 em99010pepe
40677134*3^43415+1 em99010pepe
29772794*3^43415+1 em99010pepe
23862908*3^42999+1 em99010pepe
14892316*3^42972+1 em99010pepe
12203572*3^42792+1 em99010pepe
19450274*3^41878+1 Lennart
20258534*3^41706+1 Lennart
27704962*3^41561+1 Lennart
25095394*3^41459+1 Lennart
16939082*3^40745+1 Lennart
23727272*3^40665+1 Lennart
47807146*3^39904+1 Lennart
30032708*3^39872+1 Lennart
20436272*3^38146+1 CedricVonck
30494864*3^37165+1 Mini-Geek
26804972*3^36314+1 henryzz
14454556*3^36283+1 henryzz
11658664*3^35879+1 CedricVonck
32565374*3^35794+1 CedricVonck
28675334*3^35458+1 CedricVonck
38353046*3^35109+1 CedricVonck
12562406*3^35092+1 CedricVonck
[/code]Reservations:
[code]
range tested by status # primes
86K-100K Flatlander complete 10
85K-86K henryzz complete 1
77K-85K em99010pepe complete 7
73K-77K nuggetprime complete 7
67K-73K michaf complete 1
66K-67K nuggetprime complete 0
64K-66K michaf complete 3
63K-64K mdettweiler complete 0
62K-63K michaf complete 0
42K-62K em99010pepe complete 35
39K-42K Lennart complete 8
38K-39K CedricVonck complete 1
37K-38K Mini-Geek complete 1
36K-37K henryzz complete 2
35K-36K CedricVonck complete 5
[/code]

[B]The drive is now complete. Thanks to all who helped![/B]

Have fun and knock out a bunch of k's! :smile:

Gary

 ValerieVonck 2008-07-28 12:59

reserving : 35K-36K

 henryzz 2008-07-28 13:08

reserving : 36K-37K

 ValerieVonck 2008-07-28 15:51

Two primes found:

12562406 35092
38353046 35109

Do I have to remove these k's (12562406 & 38353046 )from imy nput file?

 Mini-Geek 2008-07-28 16:06

Taking 37K-38K. Removing the two k's that Cedric found primes for.
This is mainly to balance the amount of work on my NPLB 530.0-530.6 range between my cores. For some reason, 530.3-530.6 has way more pairs to test that 530.0-530.3 did, and I'd like to find a few small primes anyway. :smile:
Edit: If I find a PRP with this, should I just report it here as a PRP or check it first? Either way, how do I check it for 100% certain primality instead of just PRP?

 henryzz 2008-07-28 17:01

[quote=Mini-Geek;138448]Taking 37K-38K. Removing the two k's that Cedric found primes for.
This is mainly to balance the amount of work on my NPLB 530.0-530.6 range between my cores. For some reason, 530.3-530.6 has way more pairs to test that 530.0-530.3 did, and I'd like to find a few small primes anyway. :smile:
Edit: If I find a PRP with this, should I just report it here as a PRP or check it first? Either way, how do I check it for 100% certain primality instead of just PRP?[/quote]
u can use pfgw to prove them prime
the options -t -tp and -tc all prove primality

 mdettweiler 2008-07-28 21:11

[quote=CedricVonck;138446]Two primes found:

12562406 35092
38353046 35109

Do I have to remove these k's (12562406 & 38353046 )from imy nput file?[/quote]
Yes, remove them (though if it's too much of a hassle, don't worry about it). Just a little warning, though: after you've removed the k's from the input file, make sure you adjust the current line being processed as stored in llr.ini--otherwise, you'll end up skipping a whole chunk of the file.

 gd_barnes 2008-07-28 21:31

[quote=henryzz;138452]u can use pfgw to prove them prime
the options -t -tp and -tc all prove primality[/quote]

You would use the -t option for +1 tests. -tp is for -1 tests.

-tc tests both but is generally used for random forms (i.e. k*b^n+7) and would take an unnecessary amount of time for +1 or -1 tests.

Gary

 gd_barnes 2008-07-28 21:34

[quote=CedricVonck;138446]Two primes found:

12562406 35092
38353046 35109

Do I have to remove these k's (12562406 & 38353046 )from imy nput file?[/quote]

At this low n-range with so many k's remaining, I wouldn't even mess with removing them from your current file. Removing 2 out of 154 k's will only save you about 2 / 154 = 1.3% CPU time.

I'll get them removed from the n>38K files later today.

Gary

 Mini-Geek 2008-07-28 21:41

30494864*3^37165+1 is prime! (from PFGW, so this is verified)

Removing from my file...

I used -t. It only took 10 seconds longer than it took to PRP it (~41 vs ~31).

Edit: Is there any existing tool to more easily remove a k from an LLR-formatted file? I'm not worried about the line number, as I could manually clear out the ones I've finished and restart it on line 1, but the new line number you need to run on would be nice too.

 Mini-Geek 2008-07-28 23:13

[quote=Mini-Geek;138470]Edit: Is there any existing tool to more easily remove a k from an LLR-formatted file? I'm not worried about the line number, as I could manually clear out the ones I've finished and restart it on line 1, but the new line number you need to run on would be nice too.[/quote]
Never mind, I noticed that srfile can do this and found the command. (I can't still edit the above post.)

 mdettweiler 2008-07-29 02:02

[quote=Mini-Geek;138473]Never mind, I noticed that srfile can do this and found the command. (I can't still edit the above post.)[/quote]
I've written a little Perl script that simplifies the process of running srfile to remove multiple k's (or just one, though if you're only removing one k you may as well just use srfile directly)--essentially, it takes an input file in any format srfile supports, removes all the k's listed in a given file (one sequence on each line, in the same format as you'd use normally with srfile), and outputs in either NewPGen, ABC, or ABCD format.

If anyone wants a copy of the program, just [email=bugmesticky@googlemail.com]email me[/email]. :smile:

 gd_barnes 2008-07-29 03:35

[quote=Anonymous;138476]I've written a little Perl script that simplifies the process of running srfile to remove multiple k's (or just one, though if you're only removing one k you may as well just use srfile directly)--essentially, it takes an input file in any format srfile supports, removes all the k's listed in a given file (one sequence on each line, in the same format as you'd use normally with srfile), and outputs in either NewPGen, ABC, or ABCD format.

If anyone wants a copy of the program, just [EMAIL="bugmesticky@googlemail.com"]email me[/EMAIL]. :smile:[/quote]

You can also use a batch process, which is what I do. Here is what I put in a file to remove the 3 k's with primes from the n=35K-50K files:

[code]
srfile -G -d "12562406*3^n+1" sieve-sierp-base3-0M-50M-35K-50K.txt
srfile -G -d "30494864*3^n+1" t16_b3.prp
srfile -G -d "38353046*3^n+1" t16_b3.prp
copy t16_b3.prp sieve-sierp-base3-0M-50M-35K-50Kb.txt
del t16_b3.prp
[/code]

Just give the file a .bat extension and run it at the command prompt.

Gary

 henryzz 2008-07-29 07:41

it looks like i am the unlucky one i am 23% done without a prime when CedricVonck has two primes at 11% and Mini-Geek has one at 17%

 henryzz 2008-07-29 09:22

14454556*3^36283+1 is prime

 ValerieVonck 2008-07-29 12:17

28675334 35458 is prime!

 henryzz 2008-07-29 12:30

26804972*3^36314+1 is prime!

 ValerieVonck 2008-07-29 16:42

32565374 35794 is prime!

 ValerieVonck 2008-07-29 18:15

11658664 35879 is prime!

 ValerieVonck 2008-07-29 19:30

Range done - following primes found

[CODE]12562406 35092
38353046 35109
28675334 35458
32565374 35794
11658664 35879[/CODE]

 ValerieVonck 2008-07-29 19:31

reserving 38k - 39k

 Lennart 2008-07-29 20:56

LLR

reserving 39k - 42k

/Lennart

 Mini-Geek 2008-07-29 22:12

1 Attachment(s)
37-38 complete, 1 prime already reported. Just one prime...just...one...lone...Cedric got five and henry got two already and I get one. Oh well, that's the randomness of prime distribution for you...
Do you need the lresults?
Edit: Ok, I attached the lresults.

 gd_barnes 2008-07-29 22:17

[quote=Mini-Geek;138536]37-38 complete, 1 prime already reported. Just one prime...just...one...lone...Cedric got five and henry got two already and I get one. Oh well, that's the randomness of prime distribution for you...
Do you need the lresults?[/quote]

Yes, if people can post their lresults, that would be helpful.

Thanks.

 ValerieVonck 2008-07-30 08:42

1 Attachment(s)
Already 1 new prime to report

20436272 38146

 Lennart 2008-07-30 14:49

Result

1 Attachment(s)
40-41 complete
Primes
23727272 40665
16939082 40745

/Lennart

 Lennart 2008-07-30 16:33

Result

1 Attachment(s)
39-40 complete
Primes
32565374 39621
30032708 39872
47807146 39904

/Lennart

 Lennart 2008-07-30 19:10

1 Attachment(s)
41k-42k
Primes
20436272 41381
25095394 41459
27704962 41561
20258534 41706
19450274 41878

/Lennart

 gd_barnes 2008-07-30 21:39

I have posted all primes found recently. The 9 k's will be removed from the remaining files shortly.

Lennart, on this effort, I'm only showing the lowest prime found for each k to help in 'balancing' the # of k's remaining. 2 of your k's that had primes already had lower primes so they are not being shown in post 1 of this thread.

For everyone, I like to see the lowest prime found for each k so if someone finds a prime in a higher n-range than what you are searching, please leave that k in your file(s) to see if a lower prime is found. Of course it can be removed if you are searching a higher n-range.

Edit: All k's with primes have now been removed.

Gary

 michaf 2008-07-30 22:49

Gary, can you send me the sieve file,
I have one core freed up now :)

Also: what is the ideal sieve depth?

thanks :)

 em99010pepe 2008-07-31 09:37

Taking 42-50 (8 files). ETA ~24 hours.

 gd_barnes 2008-07-31 10:48

[quote=michaf;138608]Gary, can you send me the sieve file,
I have one core freed up now :)

Also: what is the ideal sieve depth?

thanks :)[/quote]

Well, I goofed. I accidently deleted my n=50K-100K file that was sieved to P=100G. Fortunately I have a backup file but unfortunately it is only sieved to P=20G. I'm in the middle of sieving it to P=60G on 2 cores and will be done with that on Friday.

I could send you the file sieved to P=20G now and it would only take a little bit longer to sieve for P>60G. Or I could send you a file sieved to P=60G on Friday. Let me know which you'd prefer.

My estimate of the optimum sieve depth for breaking off n=50K-75K would be around P=150-175G but it could be lower...around P=120-130G.

The optimum is not going to come in much higher than the optimum for n=25K-50K (P=100G) because there are going to be many less k's remaining.

Do you want to sieve from P=60G to P=~150G-175G yourself or do you need help?

I assume you know to use srsieve for sieving. If you use more than one core, be sure and use the -f switch for all instances so that it will write out factors for all of them for later removal.

Gary

 ValerieVonck 2008-07-31 11:38

1 Attachment(s)
38K-39K Range Complete 1 prime found

 henryzz 2008-07-31 14:51

1 Attachment(s)
36K-37K Range Complete 2 primes found

 em99010pepe 2008-07-31 16:37

To the sievers, primes found so far:

[quote]
19947516 44420
10504636 46184
24725744 46211
15396762 46233
8828234 46265
[/quote]

 michaf 2008-07-31 17:42

I think I can use some help...
I only have one core free to chime in.

I opt for the file on friday, and then distribute the load between us (or more people) to get to concluding the drive sooner.

[quote=gd_barnes;138631]Well, I goofed. I accidently deleted my n=50K-100K file that was sieved to P=100G. Fortunately I have a backup file but unfortunately it is only sieved to P=20G. I'm in the middle of sieving it to P=60G on 2 cores and will be done with that on Friday.

I could send you the file sieved to P=20G now and it would only take a little bit longer to sieve for P>60G. Or I could send you a file sieved to P=60G on Friday. Let me know which you'd prefer.

My estimate of the optimum sieve depth for breaking off n=50K-75K would be around P=150-175G but it could be lower...around P=120-130G.

The optimum is not going to come in much higher than the optimum for n=25K-50K (P=100G) because there are going to be many less k's remaining.

Do you want to sieve from P=60G to P=~150G-175G yourself or do you need help?

I assume you know to use srsieve for sieving. If you use more than one core, be sure and use the -f switch for all instances so that it will write out factors for all of them for later removal.

Gary[/quote]

 gd_barnes 2008-07-31 20:02

[quote=michaf;138645]I think I can use some help...
I only have one core free to chime in.

I opt for the file on friday, and then distribute the load between us (or more people) to get to concluding the drive sooner.[/quote]

OK, I'll send you the file sieved to P=60G on Friday. My 2 cores are kind of slow; 32-bit operating system; but still sufficient for this small effort.

If you want to sieve P=60G-100G, I'll sieve P=100G-150G or whatever optimal turns out to be. If it needs to be sieved further, we can coordinate at that point.

I can sieve P=~20G per day so my 50G range would take 2-3 days, which would put it done to P=150G sometime on Monday.

Gary

 gd_barnes 2008-07-31 20:06

[quote=em99010pepe;138642]To the sievers, primes found so far:[/quote]

Carlos,

Thanks for helping and posting some primes now.

Micha,

Whatever k's Carlos finds primes for, I'll remove from the sieve file before sending to you on Friday. He said it'd be ~24 hours to complete his range so that timing would work out well.

Gary

 em99010pepe 2008-07-31 20:08

Gary,

Here's another one: 30237632 44437
ETA is 32 hours...I think by tomorrow at this time all ranges will be completed.

Carlos

 gd_barnes 2008-07-31 20:22

[quote=em99010pepe;138654]Gary,

Here's another one: 30237632 44437
ETA is 32 hours...I think by tomorrow at this time all ranges will be completed.

Carlos[/quote]

Great. My sieving to P=60G should complete by this time tomorrow plus ~2 hours, i.e. ~26 hours from now. So we'll have a nice efficient file to sieve for P>60G.

 em99010pepe 2008-08-01 15:02

12203572 42792
14892316 42972
23862908 42999
29772794 43415
40677134 43415
37158138 45035
37160146 45496
38804354 45875
5574644 46587
48501008 46896
12087826 47344
15895156 47532
48563402 47888
35164256 47916
41443828 49528
24763868 49675
6123394 49821

 em99010pepe 2008-08-01 17:17

42-44 done.

 em99010pepe 2008-08-01 19:56

44-46 done.

48-50 done

 em99010pepe 2008-08-01 20:30

Gary,

46-48 is still in progress, less than 100 tests but I won't be here at home in the next 4 hours to post the results. I hope you don't mind.

Carlos

 gd_barnes 2008-08-01 20:34

[quote=em99010pepe;138698]Gary,

46-48 is still in progress, less than 100 tests but I won't be here at home in the next 4 hours to post the results. I hope you don't mind.

Carlos[/quote]

No problem. I had a power outage for 4 hours in the apartment I'm staying at last night so my sieving won't be done until 4-5 hours from now.

Micha, I won't be back to the apt. for > 12 hours so I'll send you the sieved file on Sat. morning.

Gary

 em99010pepe 2008-08-02 01:05

46-48 done.

 gd_barnes 2008-08-02 10:23

Sieving for n=50K-100K is complete to P=60G. I sent the file to Micha for sieving P=60G-100G. I will be sieving P=100G-150G or whatever optimal depth is for breaking off n=50K-75K.

It should take ~2-3 days on my sieve range unless optimal depth is much higher (unlikely).

Gary

 michaf 2008-08-02 16:30

I have received the file, and am sieving away.
Results also expected in around 3 days.

 michaf 2008-08-05 18:02

Factors for 60-100G sent to Gary (all 2578 of them)

 gd_barnes 2008-08-05 20:46

[quote=michaf;138825]Factors for 60-100G sent to Gary (all 2578 of them)[/quote]

Very good. Thanks for the help. My 100G-150G range finished yesterday and 150G is past optimum sieve depth so I'll restart the drive for n=50K-75K within the next few hours.

I'll continue sieving n=75K-100K. Optimum depth on it will likely be not much more than P=200G-225G.

I'm thinking once we reach n=100K, we can do the same thing for k=50M-100M. For that range, I won't test n=25K-35K. We'll just start right in on a team drive at n=25K after sieving is done.

After completing k<100M for n=25K-100K, we can decide as a group how we want to attack both sides of base 3 from there.

I'm hoping that KEP will be done with k<500M on the Riesel side within the next month or so and we can attack that instead. I'll follow up with him and see where he is at.

I originally started the Sierp attack because it had a lower conjecture at the time. Subsequent programming and testing by others showed that the Riesel side has a lower conjecture. Therefore, maybe it makes more sense to attack the Riesel side once we complete the Sierp side to k<100M and n=100K.

Gary

 gd_barnes 2008-08-05 21:28

The drive has now restarted for n=50K-75K. Files sieved to P=150G are now posted.

I will be sieving n=75K-100K further.

Gary

 em99010pepe 2008-08-05 21:45

Taking 50-62 (12 files)..lol

 em99010pepe 2008-08-06 06:34

11785058 50252
46511144 56138
20856328 56338
34960988 56350

 michaf 2008-08-06 16:59

Taking 62k-63k

 em99010pepe 2008-08-06 18:05

48886226 51212
3938414 56779
10224166 59777

 em99010pepe 2008-08-06 21:13

I advise all to share the primes found so that we all can take them out from our current files reducing the testing time. Thanks.

michaf, you can take the 7 I found so far from your range. It will eliminate 147 candidates, 5880 seconds of work taken using a 2.96GHz machine.

 michaf 2008-08-06 22:51

[quote=em99010pepe;138889]I advise all to share the primes found so that we all can take them out from our current files reducing the testing time. Thanks.

michaf, you can take the 7 I found so far from your range. It will eliminate 147 candidates, 5880 seconds of work taken using a 2.96GHz machine.[/quote]

But thanks for warning anyway

 em99010pepe 2008-08-07 06:40

6859514 51502
40316644 51786
24925372 51893

14994106 57376

 gd_barnes 2008-08-07 11:15

I have removed the 11 k's with primes found from the remaining posted files.

 em99010pepe 2008-08-07 22:45

50-53 complete.

28964426 52608

 michaf 2008-08-08 05:46

Please stop finding primes until I'm done now :) It's starting to disencourage ;)
I'm at 75% of my range and still have found not a single prime...

Does anyone know the expected number of primes in the say 60k / 70k region?

 em99010pepe 2008-08-08 06:26

53-56 complete

 em99010pepe 2008-08-08 07:29

[quote=michaf;138981]Please stop finding primes until I'm done now :) It's starting to disencourage ;)
I'm at 75% of my range and still have found not a single prime...

Does anyone know the expected number of primes in the say 60k / 70k region?[/quote]

The next primes will credit you.

 gd_barnes 2008-08-08 07:35

[quote=michaf;138981]Please stop finding primes until I'm done now :) It's starting to disencourage ;)
I'm at 75% of my range and still have found not a single prime...

Does anyone know the expected number of primes in the say 60k / 70k region?[/quote]

In your n=1K range, there are approximately 2140 canditates for k's that didn't currently have a prime before Carlos's most recent single prime. The chance of a prime on a sieve to P=150G for this base and n-range are 1 in ~1500. Therefore, you should expect, on average, 1.4 primes in your range. At the beginning of the range, you had a 76% chance of finding a prime. So it's not particularly unusual that you wouldn't find a prime.

Here is what is truly remarkable: Carlos's n=53K-56K range contained NO primes for MORE k's! If it were for the same # of k's, he would expect 4.3 primes with a 98.6% chance of finding at least one prime. But it was actually higher for both stats since he had more k's than the calculations that I am using.

Primes are very strange! :smile:

Gary

 mdettweiler 2008-08-08 17:20

Taking 63K-64K, will start on it when the NPLB rally is over. :smile:

 michaf 2008-08-08 20:07

[quote=michaf;138881]Taking 62k-63k[/quote]

Range done, no primes

taking 64-65k

 em99010pepe 2008-08-08 20:26

56-59 done.

 gd_barnes 2008-08-08 22:25

[quote=em99010pepe;138955]50-53 complete.

28964426 52608

[quote=Anonymous;139012]Taking 63K-64K, will start on it when the NPLB rally is over. :smile:[/quote]

[quote=michaf;139017]Range done, no primes

taking 64-65k[/quote]

The only k that has a reported prime that I haven't removed from the files yet is the last one found by Carlos...k=28964426. You can feel free to remove it from your files if you want.

Gary

 mdettweiler 2008-08-09 04:25

[quote=gd_barnes;139026]The only k that has a reported prime that I haven't removed from the files yet is the last one found by Carlos...k=28964426. You can feel free to remove it from your files if you want.

Gary[/quote]
Okay, I removed it from my file. Since I haven't started the file yet, it was actually quite easy to remove the k, since I didn't have to worry about adjusting the current line in llr.ini as I normally would have. :smile:

 em99010pepe 2008-08-09 06:06

59-62 done.

 michaf 2008-08-09 16:18

My 'first':

42216418 64227

 michaf 2008-08-09 22:27

Got myself a nice bedtime-story:
11242904 64614

 gd_barnes 2008-08-10 07:56

All k's with primes have been removed from all posted files.

 michaf 2008-08-10 17:59

Range 64-65k complete, no more primes then the two already reported.

Taking 65-66k

 michaf 2008-08-12 19:12

[quote=michaf;139099]

Taking 65-66k[/quote]
Range done, one yet unreported prime:
9483244 65267

 mdettweiler 2008-08-13 01:45

1 Attachment(s)
63K-64K done, no primes. Results attached. :smile:

 jaat 2008-08-17 04:59

Reserving 66k-67k jaat

This might take more time than usual. I'll check in every few days.

 michaf 2008-08-22 17:58

Taking 67-68k

 michaf 2008-08-24 19:59

[quote=michaf;139682]Taking 67-68k[/quote]
Range done, no primes,

taking 68k-69k

 michaf 2008-08-27 17:18

[quote=michaf;139823]
taking 68k-69k[/quote]

Range done, no primes,

taking 69k-70k

 gd_barnes 2008-08-27 21:49

We've gone a little dormant on primes on this drive. Ergh! :smile:

Interestingly the optimum sieve depth for n=75K-100K appears to be the same as for n=50K-75K. That's because we've found so many k's with primes and the file is only half the size (before removing k's) of the prior n=50K-100K file that was being sieved.

Regardless of that, I'm going ahead and sieving it up to P=175G (from P=150G) and it will be done in a few hours. It just doesn't seem right not to sieve it further. (lol) By Friday, I'll add some more files up to n=80K.

After we get a little further here and I get my main sieving laptop back from the repair shop (hopefully within 1-2 weeks), I'll start sieving k=50M-100M for n=25K-100K. Once we hit n=100K on this k<50M effort, I'll start another mini-drive (or continue this one) to LLR k=50M-100M for n=25K-100K.

If anyone is interested in sieving k=50M-100M for n=25K-100K, feel free. If needed, I can assist you in getting started.

Also, if anyone wants to search k<50M for n>100K, let me know. Perhaps we can coordinate sieving several or all k's in the range for n=100K-200K (or 300K or 400K). For the time being, I won't make it a team effort since we'd like to get more k's searched to n=100K but however I/we can assist people in taking individual k's higher, we will do so.

Gary

 michaf 2008-08-30 18:46

[quote=michaf;140092]
taking 69k-70k[/quote]

Range done, once again no primes...

Taking 70-71k, expecting three primes to make up for the gap...

 michaf 2008-09-02 17:47

[quote=michaf;140448]
Taking 70-71k, expecting three primes to make up for the gap...[/quote]

Range done, once again no primes...

Taking 71-72k, and now I need 4 primes to make up for the gap...

 michaf 2008-09-05 20:09

'Whoopie' :)

Got one at last :)

Finished previous range, with one prime to boot: 29348458*3^71822+1

Reserving 72-73k

 gd_barnes 2008-09-06 04:42

[quote=jaat;139422]Reserving 66k-67k jaat

This might take more time than usual. I'll check in every few days.[/quote]

Jaat,

Can you give us a status on your range?

Any prime found in this range can potentially eliminate quite a bit of testing at higher n-ranges.

Thanks,
Gary

 nuggetprime 2008-09-16 14:41

Gary,
Firstly I should apologize for my uncompleted NPLB reservation. It was again a res lack.
I guess you already done it?
For now, I can guarantee a Q6600 in 24/7 mode for about two months from now. May I take 4 files(73K-77K)? I can crunch them in less than 48 hours. It that good performance?

Thanks,
nuggetprime

 nuggetprime 2008-09-16 15:16

Very lucky start:
29450654*3^76010+1 is prime!:banana:

one less to test!

happy hunting,
nuggetprime

 michaf 2008-09-16 19:08

[quote=michaf;141006]
Reserving 72-73k[/quote]

Range done, no prime

 nuggetprime 2008-09-17 11:11

five more primes:
9240646 74356
42497116 75136
26393956 75239
25207316 76109
39834376 76224

nuggetprime

 michaf 2008-09-17 17:48

hmm... I got the unlucky streak I guess... :)
way to go nuggetprime!

 gd_barnes 2008-09-18 11:03

[quote=nuggetprime;142703]Gary,
Firstly I should apologize for my uncompleted NPLB reservation. It was again a res lack.
I guess you already done it?
For now, I can guarantee a Q6600 in 24/7 mode for about two months from now. May I take 4 files(73K-77K)? I can crunch them in less than 48 hours. It that good performance?

Thanks,
nuggetprime[/quote]

Thanks nugget. Sorry I've been putting out fires on my other project and missed things here. Nice finds! The n=4K range is fine. People can take as many as they want as they can complete in ~2 weeks.

I'll post some more files shortly.

I'm also going to repost 66K-67K to search. Jaat has not responded on his status in several weeks.

If you reserve some more, please make 66K-67K the priority. Thanks!

Gary

 gd_barnes 2008-09-18 11:08

[quote=nuggetprime;142896]five more primes:
9240646 74356
42497116 75136
26393956 75239
25207316 76109
39834376 76224

nuggetprime[/quote]

Nugget,

Were you complete with the n=73K-77K range? I'm curious because that was fast processing to find all those primes! If so, please post results here or email them to me at gbarnes017 at gmail dot com.

Thanks,
Gary

 nuggetprime 2008-09-18 12:06

Range complete with one more prime:
46490116 74892

Residues will be sent in next five minutes (I didn't bother to remove k's with primes).
I'm sorry, I'll not take another range here, but reserve a big chunk at NPLB 4th.

--nuggetprime

 gd_barnes 2008-09-18 12:21

[quote=nuggetprime;143049]Range complete with one more prime:
46490116 74892

Residues will be sent in next five minutes (I didn't bother to remove k's with primes).
I'm sorry, I'll not take another range here, but reserve a big chunk at NPLB 4th.

--nuggetprime[/quote]

Thanks nugget. I've now removed k's with primes from all files for n>77K.

Will you need manual files to reserve at NPLB? If you have all connected machines, running LLRnet on our port 7500 is probably the best place.

If you need the manual files or need more info. on the LLRnet servers, let me know.

Thanks,
Gary

 nuggetprime 2008-09-18 12:25

I won't use llrnet since my machine isn't connected to the internet overnight. I've posted a manual reservation in the appropirate NPLB thread.

Thanks,
nuggetprime

 gd_barnes 2008-09-18 12:57

[quote=nuggetprime;143054]I won't use llrnet since my machine isn't connected to the internet overnight. I've posted a manual reservation in the appropirate NPLB thread.

Thanks,
nuggetprime[/quote]

PM sent with specifics of the reservation.

 nuggetprime 2008-09-18 16:52

Gary,
I also have a P4 running 6/6.
This one could do 66-67.

Thanks,
nuggetprime

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