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Old 2019-01-10, 10:14   #12
fivemack
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Today in Strikingly Senior Moment: I appear to have finished linear algebra on C255_141_76 and then deleted the output directory without reporting the results. That was dumb. Starting again ... ETA morning of 26/1 (I'm using a slower computer)

(the timings are such that I can't possibly have finished linear algebra, I must have run the find-optimal-density pass and then deleted the output directory without running msieve!)

Last fiddled with by fivemack on 2019-01-12 at 19:41
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Old 2019-01-11, 03:03   #13
Batalov
 
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Phi(4,2^7658614+1)/2

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Default F1983 in lin alg

Code:
Wed Jan  9 22:28:04 2019  matrix is 23778069 x 23778294 (12220.8 MB) with weight 3151182957 (132.52/col)
#decent for snfs-276

#not very fast comp
linear algebra completed 1589801 of 23778294 dimensions (6.7%, ETA 286h20m)
Previous near-276-ers, for context:
Code:
L1324
Wed Jan  3 16:48:53 2018  skew 1.15, size 1.037e-13, alpha 1.267, combined = 2.117e-14 rroots = 0
Wed Jan  3 18:46:39 2018  found 119940534 hash collisions in 497861371 relations
Wed Jan  3 18:47:09 2018  added 1218203 free relations
Wed Jan  3 18:47:09 2018  commencing duplicate removal, pass 2
Wed Jan  3 18:57:25 2018  found 115146537 duplicates and 383933037 unique relations
Wed Jan  3 23:06:23 2018  found 23705341 cycles, need 23652164
Wed Jan  3 23:06:25 2018  weight of 23652164 cycles is about 3217151743 (136.02/cycle)

F1327 log
Tue Dec 19 21:12:55 2017  skew 1.00, size 1.019e-13, alpha 1.892, combined = 2.017e-14 rroots = 0
Tue Dec 19 22:26:09 2017  begin with 356712358 relations and 310876517 unique ideals
Tue Dec 19 23:40:49 2017  found 28581358 cycles, need 26450819
Tue Dec 19 23:40:56 2017  weight of 26450819 cycles is about 3544785649 (134.01/cycle)

Lucas(1321)
Tue Oct 17 19:14:41 2017  skew 1.49, size 9.344e-14, alpha 2.227, combined = 1.888e-14 rroots = 2
Tue Oct 17 20:57:52 2017  found 133665750 hash collisions in 511552539 relations
Tue Oct 17 20:58:13 2017  added 1218546 free relations
Tue Oct 17 20:58:13 2017  commencing duplicate removal, pass 2
Tue Oct 17 21:06:52 2017  found 137460360 duplicates and 375310725 unique relations
Tue Oct 17 22:19:26 2017  begin with 375310725 relations and 303457613 unique ideals
Wed Oct 18 21:03:03 2017  found 25618456 cycles, need 25592297
Wed Oct 18 21:03:14 2017  weight of 25592297 cycles is about 3429986953 (134.02/cycle)
Fri Oct 20 06:22:38 2017  found 25486038 cycles, need 25482297
Fri Oct 20 06:22:49 2017  weight of 25482297 cycles is about 3466533334 (136.04/cycle)

XYYX
Mon Sep 12 17:33:39 2016  found 126323642 hash collisions in 501044957 relations
Mon Sep 12 17:33:56 2016  added 1219924 free relations
Mon Sep 12 17:33:56 2016  commencing duplicate removal, pass 2
Mon Sep 12 17:40:32 2016  found 126423001 duplicates and 375841880 unique relations
Mon Sep 12 18:30:37 2016  begin with 375841880 relations and 296742157 unique ideals
Tue Sep 13 12:20:52 2016  found 23687988 cycles, need 23602459
Tue Sep 13 12:21:01 2016  weight of 23602459 cycles is about 3068604558 (130.01/cycle)

Lucas(1328)
Tue Jul 17 13:26:40 2018  found 113203771 hash collisions in 455978195 relations
Tue Jul 17 13:26:55 2018  added 1218203 free relations
Tue Jul 17 13:26:55 2018  commencing duplicate removal, pass 2
Tue Jul 17 13:32:56 2018  found 114171446 duplicates and 343024952 unique relations
Tue Jul 17 14:10:06 2018  begin with 343024952 relations and 292558723 unique ideals
Wed Jul 18 04:52:08 2018  found 26818438 cycles, need 26801914
Wed Jul 18 04:52:17 2018  weight of 26801914 cycles is about 3377575768 (126.02/cycle)

Fibonacci(1321)
Thu Oct 19 16:01:40 2017  found 93181031 hash collisions in 467202541 relations
Thu Oct 19 16:01:58 2017  added 1218455 free relations
Thu Oct 19 16:01:58 2017  commencing duplicate removal, pass 2
Thu Oct 19 16:10:53 2017  found 79366729 duplicates and 389054267 unique relations
Thu Oct 19 17:27:42 2017  begin with 389054267 relations and 346114206 unique ideals
Thu Oct 19 19:01:14 2017  found 23593005 cycles, need 23404185
Thu Oct 19 19:02:09 2017  weight of 23404185 cycles is about 3042756760 (130.01/cycle)
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Old 2019-01-12, 02:30   #14
Batalov
 
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Phi(4,2^7658614+1)/2

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I will have a crack at L(1357)
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Old 2019-01-13, 14:27   #15
fivemack
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Default L4245B complete

Code:
Sun Jan 13 14:12:31 2019  p80 factor: 10100116502067233966095814742936163397801195419313015862572331323392122370166911
Sun Jan 13 14:12:31 2019  p134 factor: 89339703395435996873219202799076315180599979863736481611149367973009587866606920682629690646529318779404248178884272232477282994825841
65.0 hours for 17.51M matrix at density 118 (not 120) on 12 threads i9-7940X (I was doing filtering on the other two).

So the extra sieving to 300M rather than 250M relations saved about eight wall-clock hours of linear algebra on what wasn't a terribly difficult matrix; I don't think that's really worth it.

Log attached and at https://pastebin.com/wj7BRBmX ; factordb and Marin informed.
Attached Files
File Type: log L4245B.log (63.6 KB, 92 views)
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Old 2019-01-14, 09:12   #16
fivemack
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L1438 ETA 23 Jan morning (28M matrix on 10 cores)
C255_141_76 ETA 26 Jan morning (26M matrix on 6 cores)
L5895B ETA 29 Jan evening (38M matrix on 14 cores)
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Old 2019-01-14, 17:17   #17
VBCurtis
 
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Taking C196_3366_2183.
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Old 2019-01-14, 18:46   #18
Batalov
 
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Quote:
Originally Posted by Batalov View Post
I will have a crack at L(1357)
Code:
Found 405035121 unique, 195257192 duplicate, and 14007 bad relations.
Largest dimension used: 1391 of 1700
Average dimension used: 1236.1 of 1700

Sat Jan 12 03:52:18 2019  keeping 358241841 ideals with weight <= 200, target excess is 2192726
Sat Jan 12 03:53:40 2019  commencing in-memory singleton removal
Sat Jan 12 03:54:24 2019  begin with 406242051 relations and 358241841 unique ideals
Sat Jan 12 06:44:05 2019  commencing 2-way merge
Sat Jan 12 06:45:38 2019  reduce to 77082397 relation sets and 74538832 unique ideals
Sat Jan 12 06:45:38 2019  commencing full merge
Sat Jan 12 07:32:21 2019  memory use: 9283.1 MB
Sat Jan 12 07:32:33 2019  found 32782794 cycles, need 32699032
Sat Jan 12 07:32:50 2019  weight of 32699032 cycles is about 4578712780 (140.03/cycle)
Sat Jan 12 10:08:08 2019  matrix is 32698626 x 32698851 (16602.1 MB) with weight 4261348533 (130.32/col)
which is a good size for this amount of sieving. It is in progress but ETA is 2-4 weeks (variable load).
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Old 2019-01-16, 14:31   #19
RichD
 
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Taking C234_131_110.
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Old 2019-01-17, 00:44   #20
RichD
 
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Default C246_129_115 factored

Code:
p122 factor: 22032843179563175874040149301617086220011803261337884403882431047462903521840551495352741168104734459546777093567281746079
p125 factor: 11732896583270779627972198384987158017959143784153658059288596232754703708199827835512323553386419606092271657757437792260131
361M unique relations built a 25.6M matrix using TD=140.
Solve time estimated at 800 hours or maybe a little less. (-t 4)
Many restarts due to system problems.

Log at: https://pastebin.com/NbXFQYeX
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Old 2019-01-17, 15:38   #21
Batalov
 
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F1983 cofactor is done:
Code:
Thu Jan 17 03:11:49 2019  p61 factor: 1438625854229367720340967743828153385771529774883506804638101
Thu Jan 17 03:11:49 2019  p87 factor: 156190727234485990868901797408440337437292533470887098323411257956773799001403526948321
Thu Jan 17 03:11:49 2019  p130 factor: 4256251740423779669196681884878621775716778052044268725575122829112296629778247021027534630177382668888858669791184675040294645781
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Old 2019-01-17, 19:42   #22
swellman
 
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Taking C249_127_115.
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