Linear algebra reservations, progress and results - Page 26

fivemack · 2015-08-10, 08:43

Reserving GW_3_518, ETA Thursday lunchtime

VictordeHolland · 2015-08-10, 10:00

Taking 3348577_37_minus1

debrouxl · 2015-08-12, 18:32

9239^59-1 ends in

Code:

p62 factor: 13830384743734963797127193979205179256207599495356516855442593
p63 factor: 421113497117236990208779044484800323770136268803024383098530419
p107 factor: 17420542624094533351705733027418844077608956284164781656172330889170929254259280341615237191244559961916723

I've just entered the factors into FactorDB.

fivemack · 2015-08-13, 07:40

Should take until September 1 (452 hours estimate) for 23.9M density-120 matrix (8 cores Xeon D1540)

190-digit GNFS seems to be about the point where the linear algebra on one fast machine and the 15e sieving on NFS@home take equal time - according to my logs, the sieving has taken about 24 days and the linalg will take 19 days. I just about have enough fast machines to keep up.

For comparison, C193_2340_742 averaged 19.2M relations per day, and sieved 435M relations, so that's 23 days of sieving and the linear algebra ETA was 650 hours = 27 days.

fivemack · 2015-08-13, 12:01

Code:

Thu Aug 13 12:23:55 2015  p63 factor: 123958209017638574762712259751932428489431781817312376278269317
Thu Aug 13 12:23:55 2015  p119 factor: 49509501144870586303139936975044729502065267472745211062277835656045968754661211408764368295058478541297048313621900697

RichD · 2015-08-15, 00:40

I'll take 10321_61_minus1 when it finishes sieving.

swellman · 2015-08-15, 08:58

I'll take C177_123_92, once sieving is complete. Thanks.

RichD · 2015-08-17, 13:49

I'll take 10739_61_minus1 next.

fivemack · 2015-08-17, 20:12

Code:

Mon Aug 17 10:09:52 2015  prp64 factor: 3278977147259256662476679690732372875910577192905129431459007683
Mon Aug 17 10:09:52 2015  prp129 factor: 601069639359293640399924912376337316372761391402396880194041489144275806306895869092419835394955596242492985323161301194475492323

About 654 hours on six cores i7/4930K for a 31.47M matrix at density 120. Log attached.

fivemack · 2015-08-18, 07:39

Linear algebra started on C182_147_125; it'll finish quickly but I'll be on vacation and probably unable to read out the answer until 1 September. Equally I won't be able to start post-processing on new numbers, so it would be nice if someone else with a quad-core and 16G memory took them as they come due.

RichD · 2015-08-19, 00:28

Took 64 hours to solve a 9.4M matrix on a Core-i5 -t 4 with TD=124.

Code:

prp91 factor: 3406552954362058998619473959349995434944237314387870447485943034305170181282238740243047313
prp151 factor: 1954490750272399255080206134457118078869418472163383477871849501374955102132695125696650749919583264370574279872363121393694400304881494845103572277197

Edit: About two days left on 10739_61_minus1.

2015-08-10, 08:43	#276
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 2³·11·73 Posts	Reserving GW_3_518, ETA Thursday lunchtime Last fiddled with by fivemack on 2015-08-11 at 08:47

2015-08-10, 10:00	#277
VictordeHolland "Victor de Hollander" Aug 2011 the Netherlands 2230₈ Posts	3348577_37_minus1 Taking 3348577_37_minus1

2015-08-13, 07:40	#279
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 14430₈ Posts	3270.698 linear algebra started Should take until September 1 (452 hours estimate) for 23.9M density-120 matrix (8 cores Xeon D1540) 190-digit GNFS seems to be about the point where the linear algebra on one fast machine and the 15e sieving on NFS@home take equal time - according to my logs, the sieving has taken about 24 days and the linalg will take 19 days. I just about have enough fast machines to keep up. For comparison, C193_2340_742 averaged 19.2M relations per day, and sieved 435M relations, so that's 23 days of sieving and the linear algebra ETA was 650 hours = 27 days. Last fiddled with by fivemack on 2015-08-13 at 07:47

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2015-08-15, 00:40	#281
RichD Sep 2008 Kansas 2⁶×53 Posts	I'll take 10321_61_minus1 when it finishes sieving.

2015-08-15, 08:58	#282
swellman Jun 2012 2²×773 Posts	I'll take C177_123_92, once sieving is complete. Thanks.

2015-08-17, 13:49	#283
RichD Sep 2008 Kansas 2⁶·53 Posts	I'll take 10739_61_minus1 next.

2015-08-18, 07:39	#285
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 2³·11·73 Posts	Linear algebra started on C182_147_125; it'll finish quickly but I'll be on vacation and probably unable to read out the answer until 1 September. Equally I won't be able to start post-processing on new numbers, so it would be nice if someone else with a quad-core and 16G memory took them as they come due.