Linear algebra reservations, progress and results - Page 233

swellman · 2018-03-29, 10:21

Quote:

Originally Posted by fivemack

Looks like a missing space in the polynomial file has caused the .ini file not to be constructed. Resubmitted.

Odd that space but thank you for correcting it.

fivemack · 2018-03-30, 17:21

Quote:

Originally Posted by swellman

Houston, we have a problem. Acting on Fivemack’s expert advice, I finally got the above procedure to work on my Win 7 box (via Cygwin) and it chewed on the file for less than 10 minutes. The uncompressed “dirty” file was 72Gb, the new clean data file was 2.4 Gb. Feeding it into msieve revealed barely 20M relations residing in the data file, and filtering quickly terminated.

Either I need something else in my egrep syntax, or that data file is in bad shape.

Where to go from here?

You need the -a parameter on egrep, otherwise it will stop as soon as it notices obviously non-textual data in the file and the output will end simply 'binary file msieve.dat matches'. Discovered that just now when filtering 3366.2180

VictordeHolland · 2018-03-30, 18:36

C184_2561074343_23

Code:

Fri Mar 30 16:44:41 2018  p53 factor: 36823751901299849981177338945600920395238140969108603
Fri Mar 30 16:44:41 2018  p131 factor: 35913260077952154026013589282451074388808485347910818505391897536081058218127695406981615933226593632444124941260920655311461857637

Factors uploaded to factordb, log attached and at https://pastebin.com/rB0Upy8q

VictordeHolland · 2018-03-30, 18:39

Taking C191 from Phi_5(largest_factor(Phi_23(1009)))

fivemack · 2018-03-31, 07:19

Code:

weight of 64591916 cycles is about 4521521435 (70.00/cycle)

I've thrown it back for another two hundred million raw relations

fivemack · 2018-03-31, 10:24

Taking L2675A

swellman · 2018-03-31, 11:39

Reserving 134^73+73^134 C177 cofactor (corrected run) on 15e

VictordeHolland · 2018-04-02, 13:55

Filtering with TD=120, 110 and 100 failed (I might have been a bit too optimistic)
But TD=90 produced a very do-able matrix:

Code:

linear algebra completed 298470 of 13431670 dimensions (2.2%, ETA 125h42m)

So it should be done in about a week.

RichD · 2018-04-02, 18:30

Taking L2675B.

richs · 2018-04-02, 23:35

Quote:

Originally Posted by richs

Reserving Phi_13(largest factor of Phi_11(307))

Would someone advise the file name for this number?

Dubslow · 2018-04-02, 23:39

Quote:

Originally Posted by richs

Would someone advise the file name for this number?

C160_121xx489_13

http://factordb.com/index.php?id=1100000000438409779

2018-03-31, 07:19	#2557
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 2³×11×73 Posts	C195_3366_2180 progress Code: weight of 64591916 cycles is about 4521521435 (70.00/cycle) I've thrown it back for another two hundred million raw relations

2018-04-02, 13:55	#2560
VictordeHolland "Victor de Hollander" Aug 2011 the Netherlands 1176₁₀ Posts	C191 from Phi_5(largest_factor(Phi_23(1009))) update Filtering with TD=120, 110 and 100 failed (I might have been a bit too optimistic) But TD=90 produced a very do-able matrix: Code: linear algebra completed 298470 of 13431670 dimensions (2.2%, ETA 125h42m) So it should be done in about a week.

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2018-03-30, 18:39	#2556
VictordeHolland "Victor de Hollander" Aug 2011 the Netherlands 2³×3×7² Posts	Taking C191 from Phi_5(largest_factor(Phi_23(1009)))

2018-03-31, 10:24	#2558
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 2³·11·73 Posts	Taking L2675A

2018-03-31, 11:39	#2559
swellman Jun 2012 11×281 Posts	Reserving 134^73+73^134 C177 cofactor (corrected run) on 15e

2018-04-02, 18:30	#2561
RichD Sep 2008 Kansas 2·3·5·113 Posts	Taking L2675B.