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 findoptimaldensity pass and then deleted the output directory without running msieve!) 
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 snfs276 #not very fast comp linear algebra completed 1589801 of 23778294 dimensions (6.7%, ETA 286h20m) [/CODE] Previous near276ers, for context: [CODE]L1324 Wed Jan 3 16:48:53 2018 skew 1.15, size 1.037e13, alpha 1.267, combined = 2.117e14 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 1.019e13, alpha 1.892, combined = 2.017e14 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 9.344e14, alpha 2.227, combined = 1.888e14 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) [/CODE] 
I will have a crack at L(1357)

L4245B complete
1 Attachment(s)
[code]
Sun Jan 13 14:12:31 2019 p80 factor: 10100116502067233966095814742936163397801195419313015862572331323392122370166911 Sun Jan 13 14:12:31 2019 p134 factor: 89339703395435996873219202799076315180599979863736481611149367973009587866606920682629690646529318779404248178884272232477282994825841 [/code] 65.0 hours for 17.51M matrix at density 118 (not 120) on 12 threads i97940X (I was doing filtering on the other two). So the extra sieving to 300M rather than 250M relations saved about eight wallclock 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 [url]https://pastebin.com/wj7BRBmX[/url] ; factordb and Marin informed. 
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) 
Taking C196_3366_2183.

[QUOTE=Batalov;505655]I will have a crack at L(1357)[/QUOTE]
[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 inmemory 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 2way 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) [/CODE] which is a good size for this amount of sieving. It is in progress but ETA is 24 weeks (variable load). 
Taking C234_131_110.

C246_129_115 factored
[CODE]p122 factor: 22032843179563175874040149301617086220011803261337884403882431047462903521840551495352741168104734459546777093567281746079
p125 factor: 11732896583270779627972198384987158017959143784153658059288596232754703708199827835512323553386419606092271657757437792260131[/CODE] 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: [url]https://pastebin.com/NbXFQYeX[/url] 
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 [/CODE] [PASTEBIN]mQnYC1iP[/PASTEBIN] 
Taking C249_127_115.

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