mersenneforum.org

mersenneforum.org (https://www.mersenneforum.org/index.php)
-   Aliquot Sequences (https://www.mersenneforum.org/forumdisplay.php?f=90)
-   -   Reserved for MF - Sequence 4788 (https://www.mersenneforum.org/showthread.php?t=11615)

RichD 2017-09-12 13:21

There hasn't been any recent activity. Any ECM work? Perhaps yoyo can help get things started.

Batalov 2017-09-12 23:45

[QUOTE=RichD;467630]There hasn't been any recent activity. [/QUOTE]
Hmmm. I'd say factoring a c210 was a pretty damn good activity.
...and sort of recent, too. (Dated [URL="http://factordb.com/index.php?id=1100000000968464113"]Sep. 12[/URL].)

RichD 2017-09-13 02:00

[QUOTE=Batalov;467665]Hmmm. I'd say factoring a c210 was a pretty damn good activity.
...and sort of recent, too. (Dated [URL="http://factordb.com/index.php?id=1100000000968464113"]Sep. 12[/URL].)[/QUOTE]

I was referring to [url=http://www.factordb.com/sequences.php?se=1&aq=4788&action=range&fr=12501&to=12501]AS 4788:12501[/url] which has a C195 blocker and a total size of 199.
Unless there is something wrong with FDB I am not aware of.

Dubslow 2017-09-13 03:49

[QUOTE=RichD;467676]I was referring to [url=http://www.factordb.com/sequences.php?se=1&aq=4788&action=range&fr=12501&to=12501]AS 4788:12501[/url] which has a C195 blocker and a total size of 199.
Unless there is something wrong with FDB I am not aware of.[/QUOTE]

Create time April 20th. Certainly seems like a while.

Batalov 2017-09-13 05:07

Ah, my mistake.

[SPOILER]That old sequence is certainly worthy of moving from one 2^2 · 3 · 7 iteration to another 2^2 · 3 · 7 iteration.
Just like the other one is worthy of moving from one 2 · 3 iteration to another 2 · 3.
Both equally worthy, for sure.[/SPOILER]

yoyo 2017-09-13 06:10

ok, in the first step I'll run all curves up to 43e6.

axn 2017-09-13 06:28

[QUOTE=yoyo;467686]ok, in the first step I'll run all curves up to 43e6.[/QUOTE]

it is quite possible that ryanp has already run the necessary ecm before abandoning the sequence.

yoyo 2017-09-16 08:56

[QUOTE=yoyo;467686]ok, in the first step I'll run all curves up to 43e6.[/QUOTE]

As second step I'll run all 110e6 curves.

yoyo 2017-09-23 18:29

[QUOTE=yoyo;467893]As second step I'll run all 110e6 curves.[/QUOTE]

I run now all 260e6 curves.
Is afterwards more needed?

wombatman 2017-09-23 23:51

[QUOTE=yoyo;468440]I run now all 260e6 curves.
Is afterwards more needed?[/QUOTE]

Bayesian says, given 18000 curves @ 110e6:
[CODE]3400 curves with B1 = 850.0e6
4800 curves with B1 = 2.9e9[/CODE]

yoyo 2017-09-24 06:57

And what does it say after 42000 curves @260e6?
Where can I see what it say?

wombatman 2017-09-24 13:20

[QUOTE=yoyo;468473]And what does it say after 42000 curves @260e6?
Where can I see what it say?[/QUOTE]

After 42000 @ 260e6, it wants:[CODE]2800 curves with B1 = 2.9e9[/CODE]

It's a script that was put up on the forum by someone (Xilman, maybe?). If you search around for Bayesian or ecm-toy, you should find it. Make sure you also get the ecm-times generating script as well. It'll produce the timings needed for the ecm-toy script to do calculations properly.

Dubslow 2017-09-25 09:42

I believe it was fivemack's creation.

wombatman 2017-09-25 13:34

[url]http://www.mersenneforum.org/showthread.php?t=21420[/url]

This should be the correct thread. And yes, it was Fivemack's creation. My apologies. :smile:

ryanp 2017-09-25 15:26

Allow me to lend a hand.

[CODE]********** Factor found in step 2: 182357912893988503627254174005712015671586296929600556279774513
Found prime factor of 63 digits: 182357912893988503627254174005712015671586296929600556279774513
Prime cofactor 3437983098198847465432715554453716156167883161078675410143054569773009704002951049321643443408470436997896703479610434558233530978921 has 133 digits[/CODE]

yoyo 2017-09-25 15:41

Ok, So I wasted the time of my Minions :(

VBCurtis 2017-09-25 17:45

[QUOTE=yoyo;468533]Ok, So I wasted the time of my Minions :([/QUOTE]

Well, not really- it's likely Ryan wouldn't pay attention or have a go at it until something near t55 was done.

If you don't want to use the Bayesian tool each time you queue curves, you can still improve on the old methods by doing half the usual number of curves at a B1 level before moving to the next B1. Once you've done half a t50, move to B1 = 110M, etc. The second half of the effort for t50 is then completed by the 110M-bound curves,while improving chances to find bigger factors.

yoyo 2017-10-05 19:52

I were running all curves up to B1=110e6 for the current C167.
More curves required?

VBCurtis 2017-10-05 20:35

[QUOTE=yoyo;469308]I were running all curves up to B1=110e6 for the current C167.
More curves required?[/QUOTE]

~2*t50 is enough for C167, so t55 is more than enough.

unconnected 2017-11-22 13:41

С167 splits as P81*P87, next blocker is C157, ECM'ed to t40 by me.

ryanp 2017-11-23 05:34

[QUOTE=unconnected;472239]С167 splits as P81*P87, next blocker is C157, ECM'ed to t40 by me.[/QUOTE]

I'll help out here:

[CODE]********** Factor found in step 2: 429703755622418749195461202672606685434385383452642849506855188546787
Found probable prime factor of 69 digits: 429703755622418749195461202672606685434385383452642849506855188546787
Probable prime cofactor 16506221423962903401572546600437748119934273038133738581822300715727493794731141539898483 has 89 digits[/CODE]

Dubslow 2017-12-12 16:13

Curtis, seems that 4788 is waiting on a C146 that showed up a few lines and a few days after the most recent post here, do you want to CADOize it?

VBCurtis 2017-12-12 17:22

Yes, please! I'll start this morning. Should be 4 days or so.

Batalov 2017-12-12 17:32

[QUOTE=VBCurtis;473851]Should be 4 days or so.[/QUOTE]
4 days for a c146. <===> 4000 days for a c197.
(Just to keep things in perspective.)

LaurV 2017-12-13 04:42

Ye assume he has nothing in his Q.

VBCurtis 2017-12-16 00:51

Factors, reported to FactorDB this time:
[code]5549197341624338233523401594270651210469419943578860543352095617937601
1811457164989861608083111991415393667057176845661763189253626073324202259447[/code]
CADO took 1.7 megathreadseconds for the C146 factorization. That includes 10 hrs wall clock time for the linear algebra.

RichD 2018-01-07 07:00

C135 @ i12513
 
[B]yoyo[/B] found a p43 leaving a C135 at this step.

Anyone interested at finishing it off?
(I am over committed right now and can't do it for a while.)

Dubslow 2018-01-07 16:36

I got it.

Dubslow 2018-01-10 03:15

The following C185 has had at least t45 with continuing (if extremely slow) ECM by me. Looks like a likely GNFS target. It would take me 90 hours to complete ECM to t50, but I'm letting it run now while my computer access is intermittent. Either yoyo@home or someone else can complete ECM (to ~t55 level I would think) and begin a poly search.

swellman 2018-01-14 17:55

Dubslow - any hits? You mention intermittent computer access, but let us know when you can about progress.

Maybe yoyo can take on ECM to t55 if necessary? I don’t have the resources available currently.

Dubslow 2018-01-14 21:01

A P46 popped out right after I PM'd yoyo@home, and the C140 residual will be done in a few hours (Sandy Bridge quad core isn't very fast these days, but at least I'm back home after the holidays now)

Dubslow 2018-01-15 21:08

[URL="http://factordb.com/sequences.php?se=1&aq=4788&action=last20&fr=0&to=100"]Index 12515[/URL] has a C197. t40 complete, 12 hours on my box to completing t45. 4/13s ECM rule suggests a t60 be completed. I think we'd definitely need yoyo@home for this.

Perhaps two runs for yoyo@home: a hybrid t50/t55 -- perhaps 12K@75M, with the second round being a standard t60 42K@260M?

Dubslow 2018-02-25 14:29

yoyo@home seems to have completed ECM to at least the t60 level. I believe poly select can now begin, although perhaps some further ECM is warranted -- or perhaps not.

RichD 2018-03-25 23:56

C197 @ i12515
 
yoyo is completing 10K @ 850e6. This is surely enough ECM. A C197 can also be added to the poly select/generation queue.

RichD 2018-10-25 11:20

C174 @ i12516
 
It looks like yoyo completed a full t55 plus 8000 @ t60 on the remaining C174. Should be ready for poly selection.

RichD 2018-12-01 22:05

C153 @ i12518
 
Anybody running ECM on the C153? After the C174 was split, it has advanced a couple terms but nothing recently. It stands at:

2^2 * 3^2 * 7^2 * ... * C153

ricky 2018-12-02 15:12

I can do GNFS on the C153 if it has received enough ECM.

RichD 2018-12-03 17:06

C153
 
yoyo@home has 7800 @ 43e6 in the input queue but it hasn't gone active yet.

ricky 2018-12-09 21:25

I am doing it, it will finish quite soon, so it's not necessary that yoyo@home does it.

ricky 2018-12-12 10:37

The C153 factors as
[CODE]
p74 factor: 19928638114143557639348319790409168695610012346109977780982024608631375087
p79 factor: 7798641889897770108922816559374634253586927781674138840644647051053991265389963
[/CODE]
I have added some more term to the sequence (and currently doing ECM on a C194).

ricky 2018-12-27 12:47

I've ECMed the C194 with 14716 curves at B1=110M (yafu's default for t=55), without luck. I'm stopping working on it.

yoyo 2018-12-27 13:40

I'll run the t=60.

yoyo 2018-12-28 07:26

A p57 found. Now it is a C165.

LaurV 2018-12-28 08:24

Nice hit!

Unfortunately, the D2 is difficult to lose, especially at this size. On the bright side, if it does not get a 3, then it is steady (i.e. it doesn't grow much), and 5 is not sticky. But unless we double the seven, there is no much hope...



Maybe we could find a "better" sequence to tickle? :wonder:

ricky 2018-12-30 11:16

Great! I am doing the C165.

ricky 2019-01-13 10:03

It's now a C167. I've ECMed it with 7553 curves at B1=43M without luck and I'm dropping it.

yoyo 2019-01-13 10:25

I'll run all B1=110M curves.

yoyo 2019-01-15 20:47

17030 curves done so far without factor. I run up to 18000 curves.
What is needed next?

VBCurtis 2019-01-16 01:59

2t50 was probably enough, so your curves are more than sufficient. We'll do poly select soon and get it fed to the 14e queue.

ricky 2019-01-16 09:58

I can do the linear algebra if you need it.

VBCurtis 2019-02-01 17:29

The c167 is factored and reported to factordb. I did zero ECM on the new line.
Go, Ricky, go!

wpolly 2019-02-01 20:02

The latest composite is a C154 (ECMed to t25) after three easy lines.
Edit: C126 at t30.

ricky 2019-02-02 08:42

I'm working on it!

ricky 2019-02-02 18:31

The C126 factors very nicely as p63*p63! :smile:

ricky 2019-02-05 16:13

It's now a C196... I've ECMed it to t=50. I think yoyo@home may be interested to go to t=55 at least... or perhaps even to t=60.

swellman 2019-02-12 01:55

[QUOTE=ricky;507714]It's now a C196... I've ECMed it to t=50. I think yoyo@home may be interested to go to t=55 at least... or perhaps even to t=60.[/QUOTE]

Anybody still working on this? Has yoyo been contacted about ECM?

RichD 2019-03-20 03:16

C196 @ i12534
 
I see [B]yoyo[/B] has completed t55 + 20K @ 26e7 and is nearing 12K @ 85e7. That should be plenty to start GNFS poly selection.

VBCurtis 2019-03-21 04:13

about 600 thread-hours on CADO poly select yielded this:
[code]n: 1702810278506124393622905886419417373727833799255920336877918870350397583189521830994382118639550712786413448936290016013396498804612664118174179978449082129699734624314982852315442373887230082927
skew: 53530918.291
c0: -14138230899246094225865032544701492909383604820
c1: -93571871123367745680754273625163957009
c2: 37510656767740839089260370637202
c3: 475303574396348223775899
c4: -8150194247457752
c5: 4386480
Y0: -88526646710138023135509930133068454122
Y1: 21051283668116650162091989
# MurphyE (Bf=4.000e+08,Bg=2.680e+08,area=2.147e+17) = 2.67e-11[/code]
I don't recall a good way to run this through msieve to find the usual score; if someone could do so we can compare it to the C196 record and decide how much msieve-GPU poly select to continue with.

axn 2019-03-21 05:54

[QUOTE=VBCurtis;511291]
[code]# MurphyE (Bf=4.000e+08,Bg=2.680e+08,area=2.147e+17) = 2.67e-11[/code]
I don't recall a good way to run this through msieve to find the usual score; if someone could do so we can compare it to the C196 record and decide how much msieve-GPU poly select to continue with.[/QUOTE]
[C]Msieve v. 1.52 (SVN 883 pre-release)[/C]
[CODE]commencing number field sieve (196-digit input)
R0: -88526646710138023135509930133068454122
R1: 21051283668116650162091989
A0: -14138230899246094225865032544701492909383604820
A1: -93571871123367745680754273625163957009
A2: 37510656767740839089260370637202
A3: 475303574396348223775899
A4: -8150194247457752
A5: 4386480
skew 53530918.29, size 3.836e-019, alpha -8.143, combined = 9.505e-015 rroots = 5[/CODE]

swellman 2019-03-21 11:03

The [url=http://myfactors.mooo.com]skew optimizer[/url] suggests it can be improved even further:

skew: 76499475.66494
E-score: 9.56202965e-15

VBCurtis 2019-03-21 15:45

The previous C196 record was 8.16e-15. This beats the C195 record too (which was lower than C196).

Seems the CADO poly-select is very effective on large inputs! The C206 last week in the poly select thread also found CADO highly effective.

Let's give Max a bit of time to appear and try his magic before we queue to 15e?

Max0526 2019-03-21 22:44

C196 and C195
 
[QUOTE=VBCurtis;511334]The previous C196 record was 8.16e-15. [B] This beats the C195 record too (which was lower than C196).
[/B]
Seems the CADO poly-select is very effective on large inputs! The C206 last week in the poly select thread also found CADO highly effective.

Let's give Max a bit of time to appear and try his magic before we queue to 15e?[/QUOTE]


Well, no, it doesn't (and it wasn't).
[URL]https://www.mersenneforum.org/showpost.php?p=503952&postcount=134[/URL] and [URL]https://www.mersenneforum.org/showpost.php?p=481656&postcount=101[/URL]

I got swellman's PM, I'm on it but so far it doesn't look too promising.

VBCurtis 2019-03-22 04:10

Thanks for the 2018 table; I've updated my copy of the chart to correct the out-of-date records.

Max0526 2019-03-23 03:55

C196 poly
 
[QUOTE=Max0526;511365]Well, no, it doesn't (and it wasn't).
[URL]https://www.mersenneforum.org/showpost.php?p=503952&postcount=134[/URL] and [URL]https://www.mersenneforum.org/showpost.php?p=481656&postcount=101[/URL]

I got swellman's PM, I'm on it but so far it doesn't look too promising.[/QUOTE]
It was a bit ahead of myself. It's better by now. I'll post it finalized before going to bed.

Max0526 2019-03-23 13:43

C196 poly -- new record
 
Crossed 1e-14! :stirpot:

They might not sieve the same, please test-sieve.

from CADO:[code]Y0: -88526593606906636872832313995490222337
Y1: 21051283668116650162091989
c0: -16963157469344920969930575255084128666463471380
c1: 104226072109715053258553301087375190176
c2: 40797138907888738018707441706807
c3: 393345121770100035860379
c4: -8094868342851752
c5: 4386480
skew: 76011430.42456
# lognorm 61.32, E 53.00, alpha -8.31 (proj -2.17), 5 real roots
# MurphyE(Bf=1.000e+07,Bg=5.000e+06,area=1.000e+16) = 1.00222868e-14[/code]from msieve:[code]Y0: -88526652402994562936959400167280855414
Y1: 21051283668116650162091989
c0: -16945072822861140163957622147315197462146382800
c1: -113754137212796358973399404221053058157
c2: 37121473509227882514071277769078
c3: 484122945206142149130523
c4: -8156125382524952
c5: 4386480
skew: 75049313.58
# size 4.185e-19, alpha -8.314, combined = 1.002e-14 rroots = 5[/code]

swellman 2019-04-10 11:23

I test sieved both polys and found the first to be slightly better

[code]
n: 1702810278506124393622905886419417373727833799255920336877918870350397583189521830994382118639550712786413448936290016013396498804612664118174179978449082129699734624314982852315442373887230082927
skew: 76011430.42456
c0: -16963157469344920969930575255084128666463471380
c1: 104226072109715053258553301087375190176
c2: 40797138907888738018707441706807
c3: 393345121770100035860379
c4: -8094868342851752
c5: 4386480
Y0: -88526593606906636872832313995490222337
Y1: 21051283668116650162091989
type: gnfs
# lognorm 61.32, E 53.00, alpha -8.31 (proj -2.17), 5 real roots
# MurphyE(Bf=1.000e+07,Bg=5.000e+06,area=1.000e+16) = 1.00222868e-14
rlim: 268000000
alim: 400000000
lpbr: 33
lpba: 33
mfbr: 65
mfba: 94
rlambda: 3.0
alambda: 3.6
[/code]

Test sieving on the -a side with Q in blocks of 2K using some advice from VBCurtis (mfbr=64 performed horribly):
[code]
Q0=50M 5285 rels
Q0=100M 4644 rels
Q0=200M 5113 rels
Q0=300M 3800 rels
Q0=400M 3234 rels
Q0=500M 3513 rels
Q0=600M 2580 rels
[/code]

The big unknown to me is how many relations are needed? I would typically aim for 850-900M on a 33 bit job but that seems like overkill considering some of the parameters. Should I initially aim for 600M and slowly increase the Q range until a matrix can be built? Advice welcome.

Once a consensus is reached, I'll enqueue it in 15e.

VBCurtis 2019-04-10 13:47

I'd go for 900M to start, and then we can decide how many more to request once we see how many unique relations we have.
You can reserve the postprocessing for me when you queue it.

VBCurtis 2019-09-29 07:12

The c196 is finished, factors posted. i12535 has a c187, I'm running 3000 curves at B1=2e7 overnight. If no factor, I'll run curves at 6e7 tomorrow until a t50 is complete.

VBCurtis 2019-09-30 04:19

t50 complete. I've scheduled 3000 curves at 15e7.

I lack the patience to go past a t55; if a GPUer or yoyo could do half a t60, that should be about enough.

swellman 2019-10-01 20:04

[QUOTE=VBCurtis;526956]t50 complete. I've scheduled 3000 curves at 15e7.

I lack the patience to go past a t55; if a GPUer or yoyo could do half a t60, that should be about enough.[/QUOTE]

I’ll put it in Yoyo’s queue.

swellman 2019-10-07 18:53

i12537
 
I just went to enqueue this series and see that it has progressed. Current on i12537 with a C177. Is anyone actively working this series right now?

VBCurtis 2019-10-07 23:47

Wasn't me! I'll run some curves at 6e7 on the C177; that's small enough we won't need yoyo's help for ECM.

RichD 2019-10-08 01:02

Ryan must be at it again. :smile:

EdH 2019-10-08 01:36

[strike]I'll run some ECM at 11e7 overnight as well.[/strike]
Might that step on your toes?

VBCurtis 2019-10-08 03:10

[QUOTE=EdH;527485][strike]I'll run some ECM at 11e7 overnight as well.[/strike]
Might that step on your toes?[/QUOTE]

Step right ahead! I don't have free cores till tomorrow anyway, so I'll run some at 15e7 instead if you don't crack it. We should sum to half a t55, give or take, when we finish.

EdH 2019-10-08 03:33

[QUOTE=VBCurtis;527492]Step right ahead! I don't have free cores till tomorrow anyway, so I'll run some at 15e7 instead if you don't crack it. We should sum to half a t55, give or take, when we finish.[/QUOTE]
I'll let you know how many I ran in the morning. I just queued it into my ecmpi script, so it's supposed to run a few smaller curves and then lots of 11e7 before passing it to NFS (which is inhibited ATM).

EdH 2019-10-08 12:37

[QUOTE=EdH;527494]I'll let you know how many I ran in the morning. . .[/QUOTE]Darn it! I ran a crippled version of my script and it only did 496 curves @11e7 and quit.

vebis 2019-10-08 14:56

I did 4480 curves @11e7 and i'm currently at 1952 of 7584 @43e7 ETA 14h

vebis 2019-10-10 05:58

7584 curves on C177, B1=43M completed. Now doing B1=110M 4544 of 12800 completed.

VBCurtis 2019-10-10 07:07

[QUOTE=vebis;527642]7584 curves on C177, B1=43M completed. Now doing B1=110M 4544 of 12800 completed.[/QUOTE]

If I'd known you meant 43e6 instead of 43e7, I could have saved you the time. 11e7 was the level to work at! Oh well.

vebis 2019-10-10 07:22

[QUOTE=VBCurtis;527646]If I'd known you meant 43e6 instead of 43e7, I could have saved you the time. 11e7 was the level to work at! Oh well.[/QUOTE]

Oh yeah, one digits which matters. Anyway now i'm on track with 11e7 as stated above.

VBCurtis 2019-12-22 22:13

I'm going to polyselect this C177 (i12546) and submit to the 14e queue.

ryanp 2019-12-23 01:15

[QUOTE=VBCurtis;533393]I'm going to polyselect this C177 (i12546) and submit to the 14e queue.[/QUOTE]

Sorry, I'm already working on this c177 -- it's in LA and should be done sometime tomorrow. (Should I have reserved the sequence somewhere?)

VBCurtis 2019-12-23 02:18

Nice timing, sir. After two months of no posts, a reservation doesn't seem necessary; if you did report your work plans, please use this thread.

Thanks for the help!

ryanp 2019-12-23 23:06

[QUOTE=ryanp;533408]Sorry, I'm already working on this c177 -- it's in LA and should be done sometime tomorrow. (Should I have reserved the sequence somewhere?)[/QUOTE]

Correction, CADO-NFS has only completed the first stage of LA (krylov). Looks like we'll have the factors on Wednesday.

swellman 2019-12-30 14:01

This series seems to have stalled at i12553 (C169). Anyone still working it?

ryanp 2019-12-30 15:30

[QUOTE=swellman;533754]This series seems to have stalled at i12553 (C169). Anyone still working it?[/QUOTE]

I'm still on it. :smile: I'll post a note if/when I release it.

ryanp 2020-01-02 23:35

And, we're going again...

Drdmitry 2020-01-03 22:30

Finally, with 12562 known terms, this sequence has become the longest sequence below 1e6 for the moment.

However it will be impossible to beat 2005020 without a downdriver.

ryanp 2020-01-06 03:33

index 12566
 
Bad news: the c205 at index 12566 (1905316801...) has thus far failed to yield to ECM.

I've run 83K curves at B1=29e8, but no hits. May continue on at B1=76e8 after.

Could this be a good GNFS target for the forum? I may not have the time/resources to devote to it.

VBCurtis 2020-01-06 04:32

[QUOTE=ryanp;534357]Bad news: the c205 at index 12566 (1905316801...) has thus far failed to yield to ECM.

I've run 83K curves at B1=29e8, but no hits. May continue on at B1=76e8 after.

Could this be a good GNFS target for the forum? I may not have the time/resources to devote to it.[/QUOTE]

Yes, yes it could. We'd appreciate it if you could aim a couple of CADO clients at the forum server if we do take it on; I'd run it on I=15, so each client would be ~3GB memory. Sieve time would be on the order of 75 [hyper]thread-years.

Those who donate client-cycles may prefer to tackle the c204 GNFS cunningham target first, or either of these might just get sent to Greg's 16e queue at NFS@home.

ryanp 2020-11-06 01:50

Hello A4788 my old friend
 
I've come to unblock you again..

[CODE]Msieve v. 1.54 (SVN 1030M)
GMP: 6.2.0
Thu Nov 5 15:15:39 2020
random seeds: b2118e58 790b70c1
factoring 1905316801900227776940740392824424737989728747169726258280714634792948493247829252120845527350847484333154257861780256228486021326259811811322794867063747268414450756262259879962628547123420929973114919411 (205 digits)
no P-1/P+1/ECM available, skipping
commencing number field sieve (205-digit input)
R0: -644385218268975855216257270717655
R1: 7554842833428957692911
A0: 968459661759956978335434484607254900640
A1: -84216134837203272920647028519575602
A2: -2272015212039749459863221804895
A3: 46966005229435841480877792
A4: 215405822583844424753
A5: -3185898266006400
A6: -8516121600
skew 1.00, size 9.339e-15, alpha -8.029, combined = 2.424e-16 rroots = 6

commencing linear algebra
read 53676482 cycles
cycles contain 173114391 unique relations
read 173114391 relations
using 20 quadratic characters above 4294917295
building initial matrix
memory use: 24824.7 MB
read 53676482 cycles
matrix is 53676304 x 53676482 (27077.6 MB) with weight 8147585062 (151.79/col)
sparse part has weight 6454113870 (120.24/col)
filtering completed in 2 passes
matrix is 53675530 x 53675708 (27077.5 MB) with weight 8147552115 (151.79/col)
sparse part has weight 6454105192 (120.24/col)
matrix starts at (0, 0)
matrix is 53675530 x 53675708 (27077.5 MB) with weight 8147552115 (151.79/col)
sparse part has weight 6454105192 (120.24/col)
saving the first 240 matrix rows for later
matrix includes 256 packed rows
matrix is 53675290 x 53675708 (24980.0 MB) with weight 5995587872 (111.70/col)
sparse part has weight 5689533400 (106.00/col)
using block size 8192 and superblock size 608256 for processor cache size 25344 kB
commencing Lanczos iteration (64 threads)
memory use: 34200.5 MB
linear algebra at 0.0%, ETA 438h13m675708 dimensions (0.0%, ETA 438h13m)
checkpointing every 130000 dimensions5708 dimensions (0.0%, ETA 430h34m)
linear algebra completed 213115 of 53675708 dimensions (0.4%, ETA 471h49m)[/CODE]

ryanp 2020-11-21 23:51

LA on the c205 blocker done, onto the sqrt phase...

[CODE]Fri Nov 20 19:53:24 2020 Msieve v. 1.54 (SVN 1030M)
Fri Nov 20 19:53:24 2020 GMP: 6.2.0
Fri Nov 20 19:53:24 2020 random seeds: f0d0fbab d4c8c7cc
Fri Nov 20 19:53:24 2020 factoring 1905316801900227776940740392824424737989728747169726258280714634792948493247829252120845527350847484333154257861780256228486021326259811811322794867063747268414450756262259879962628547123420929973114919411 (205 digits)
Fri Nov 20 19:53:25 2020 no P-1/P+1/ECM available, skipping
Fri Nov 20 19:53:25 2020 commencing number field sieve (205-digit input)
Fri Nov 20 19:53:25 2020 R0: 644385218268975855216257270717655
Fri Nov 20 19:53:25 2020 R1: -7554842833428957692911
Fri Nov 20 19:53:25 2020 A0: -968459661759956978335434484607254900640
Fri Nov 20 19:53:25 2020 A1: 84216134837203272920647028519575602
Fri Nov 20 19:53:25 2020 A2: 2272015212039749459863221804895
Fri Nov 20 19:53:25 2020 A3: -46966005229435841480877792
Fri Nov 20 19:53:25 2020 A4: -215405822583844424753
Fri Nov 20 19:53:25 2020 A5: 3185898266006400
Fri Nov 20 19:53:25 2020 A6: 8516121600
Fri Nov 20 19:53:25 2020 skew 1.00, size 9.339e-15, alpha -8.029, combined = 2.424e-16 rroots = 6
Fri Nov 20 19:53:25 2020
Fri Nov 20 19:53:25 2020 commencing square root phase
Fri Nov 20 19:53:25 2020 reading relations for dependency 1
Fri Nov 20 19:53:29 2020 read 26081206 cycles
Fri Nov 20 19:54:15 2020 cycles contain 85819134 unique relations
Fri Nov 20 20:00:30 2020 read 85819134 relations
Fri Nov 20 20:08:59 2020 multiplying 85819134 relations
Sat Nov 21 00:25:42 2020 multiply complete, coefficients have about 6070.54 million bits
Sat Nov 21 00:27:12 2020 initial square root is modulo 6421997
Sat Nov 21 05:03:35 2020 GCD is N, no factor found
Sat Nov 21 05:03:35 2020 reading relations for dependency 2
Sat Nov 21 05:03:42 2020 read 26076816 cycles
Sat Nov 21 05:05:50 2020 cycles contain 85808718 unique relations
Sat Nov 21 05:13:23 2020 read 85808718 relations
Sat Nov 21 05:29:42 2020 multiplying 85808718 relations
Sat Nov 21 10:06:16 2020 multiply complete, coefficients have about 6069.83 million bits
Sat Nov 21 10:07:51 2020 initial square root is modulo 6410059
Sat Nov 21 15:01:19 2020 GCD is 1, no factor found
Sat Nov 21 15:01:19 2020 reading relations for dependency 3
Sat Nov 21 15:01:27 2020 read 26077136 cycles
Sat Nov 21 15:03:40 2020 cycles contain 85804702 unique relations
Sat Nov 21 15:11:34 2020 read 85804702 relations
Sat Nov 21 15:28:11 2020 multiplying 85804702 relations[/CODE]

bsquared 2020-11-22 01:02

[QUOTE=ryanp;563981]LA on the c205 blocker done, onto the sqrt phase...

[CODE]...
Sat Nov 21 10:07:51 2020 initial square root is modulo 6410059
Sat Nov 21 15:01:19 2020 GCD is 1, no factor found
Sat Nov 21 15:01:19 2020 reading relations for dependency 3
Sat Nov 21 15:01:27 2020 read 26077136 cycles
Sat Nov 21 15:03:40 2020 cycles contain 85804702 unique relations
Sat Nov 21 15:11:34 2020 read 85804702 relations
Sat Nov 21 15:28:11 2020 multiplying 85804702 relations[/CODE][/QUOTE]

:popcorn:

ryanp 2020-11-22 19:59

A4788 i12566 factored
 
Cracked it on the 4th dep.

[CODE]Sun Nov 22 01:22:50 2020 reading relations for dependency 4
Sun Nov 22 01:22:57 2020 read 26077789 cycles
Sun Nov 22 01:25:15 2020 cycles contain 85796244 unique relations
Sun Nov 22 01:33:14 2020 read 85796244 relations
Sun Nov 22 01:49:31 2020 multiplying 85796244 relations
Sun Nov 22 06:47:42 2020 multiply complete, coefficients have about 6068.95 million bits
Sun Nov 22 06:49:21 2020 initial square root is modulo 6395869
Sun Nov 22 11:43:36 2020 sqrtTime: 143411
Sun Nov 22 11:43:36 2020 p84 factor: 612727101216841212852838132931420183159227670481704836048413322760603770006744226207
Sun Nov 22 11:43:36 2020 p121 factor: 3109568351255194772600345239390001448995931316250320993654548823052509790679152109713793122115796159590511967310967260973
Sun Nov 22 11:43:36 2020 elapsed time 39:50:12[/CODE]

charybdis 2020-11-23 22:57

Is anyone working on the c165? If not I'm happy to give it a go.

ryanp 2020-11-23 22:58

[QUOTE=charybdis;564146]Is anyone working on the c165? If not I'm happy to give it a go.[/QUOTE]

Already on it :smile:

It didn't yield with a good bit of ECM (B1=26e7), so just going straight to msieve now.


All times are UTC. The time now is 12:08.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.