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Old 2021-07-06, 21:42   #119
Xyzzy
 
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Aug 2002

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We were able to finish linear algebra phase on 4p3_1341M without the extra relations.

We think that somehow repeatedly shutting down and restarting the process has a chance of corrupting things.

We are using the BTRFS filesystem on a top-quality SSD with an online UPS so we don't think it is a hardware error.

Anyways, we ran into this problem trying to run the square root phase:
Code:
Tue Jul  6 16:23:47 2021  Msieve v. 1.54 (SVN 1041)
Tue Jul  6 16:23:47 2021  random seeds: 3c46836a 51a73f7c
Tue Jul  6 16:23:47 2021  factoring 798714408583534111218890232290224688792108684535127942573951568105348821635488501822138981923034879063165326737648089547891701098011684158965932673371227082652984500807199785769778899213 (186 digits)
Tue Jul  6 16:23:47 2021  no P-1/P+1/ECM available, skipping
Tue Jul  6 16:23:47 2021  commencing number field sieve (186-digit input)
Tue Jul  6 16:23:47 2021  R0: -671434345011425390364129256815738507
Tue Jul  6 16:23:47 2021  R1: 302918003288600224887967
Tue Jul  6 16:23:47 2021  A0: 855299734549376002681269040716011503195190
Tue Jul  6 16:23:47 2021  A1: -3578725611871361502992472667183513387
Tue Jul  6 16:23:47 2021  A2: -1470548342195016584382531299800
Tue Jul  6 16:23:47 2021  A3: 55439831693748260477406
Tue Jul  6 16:23:47 2021  A4: 5309014851641644
Tue Jul  6 16:23:47 2021  A5: -76090560
Tue Jul  6 16:23:47 2021  skew 12538082.23, size 2.982e-18, alpha -7.736, combined = 3.404e-14 rroots = 5
Tue Jul  6 16:23:47 2021  
Tue Jul  6 16:23:47 2021  commencing square root phase
Tue Jul  6 16:23:47 2021  cannot handle negative leading algebraic polynomial coefficient
Tue Jul  6 16:23:47 2021  sqrtTime: 0
Tue Jul  6 16:23:47 2021  elapsed time 00:00:00
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