2019 14e post processing reservations and results - Page 46

jyb · 2019-07-15, 20:43

Code:

p71 factor: 12047148139352766754859725045952250501198736783793080325577218673476201
p158 factor: 12199899427634326767083034694090485186756744665386819009946581419641447176080150003216079386485607377817166862017661902632438072206873701021584228886114023169

https://pastebin.com/Y66XBeb7

jyb · 2019-07-15, 20:49

Taking 11p4_241.

fivemack · 2019-07-16, 09:21

Taking 11m9_241

fivemack · 2019-07-16, 17:12

Code:

Tue Jul 16 12:17:24 2019  p81 factor: 301173663591011981702459592937500069687148929453759118435772328764749977349309657
Tue Jul 16 12:17:24 2019  p161 factor: 22363515223598628720938528891665396897518826441414996942606123583370915836131172930865697150339547925226853527820061658889322372469223124458917446020040006633947

88.4 hours on 4 cores i7/4790K for 12.14M matrix at density 122 (not 124), built from 191359438 unique relations out of 258090086 legible ones.

Log attached and at https://pastebin.com/tUp7r8MX

pinhodecarlos · 2019-07-16, 20:32

Taking C220_M31_k84

richs · 2019-07-18, 02:20

Quote:

Originally Posted by richs

Taking C205_M31_56

The attached fb file (renamed to .txt to allow upload) downloaded from NFS@home is incorrect:

Code:

Wed Jul 17 19:09:47 2019  
Wed Jul 17 19:09:47 2019  
Wed Jul 17 19:09:47 2019  Msieve v. 1.54 (SVN 1018)
Wed Jul 17 19:09:47 2019  random seeds: a04eb644 ffb8de94
Wed Jul 17 19:09:47 2019  factoring 206096410611951174045821265662801553998153606775865027340583623737504752836950161480307306091972044325136654318470634270970481119615373216127224716703050950135265027468900620513606317179638695800547135347262644369289055809 (222 digits)
Wed Jul 17 19:09:49 2019  searching for 15-digit factors
Wed Jul 17 19:09:52 2019  commencing number field sieve (205-digit input)
Wed Jul 17 19:09:52 2019  warning: NFS input not found in factor base file
Wed Jul 17 19:09:52 2019  R0: 0
Wed Jul 17 19:09:52 2019  A0: 0
Wed Jul 17 19:09:52 2019  skew 1.00, size 0.000e+000, alpha 0.000, combined = 0.000e+000 rroots = 0
Wed Jul 17 19:09:52 2019  
Wed Jul 17 19:09:52 2019  commencing relation filtering
Wed Jul 17 19:09:52 2019  setting target matrix density to 120.0
Wed Jul 17 19:09:52 2019  warning: NFS input not found in factor base file
Wed Jul 17 19:09:52 2019  estimated available RAM is 4043.9 MB
Wed Jul 17 19:09:52 2019  commencing duplicate removal, pass 1

Would someone kindly post the correct fb file? Thanks!

jyb · 2019-07-18, 05:06

Quote:

Originally Posted by richs

The attached fb file (renamed to .txt to allow upload) downloaded from NFS@home is incorrect:

Code:

Wed Jul 17 19:09:47 2019  
Wed Jul 17 19:09:47 2019  
Wed Jul 17 19:09:47 2019  Msieve v. 1.54 (SVN 1018)
Wed Jul 17 19:09:47 2019  random seeds: a04eb644 ffb8de94
Wed Jul 17 19:09:47 2019  factoring 206096410611951174045821265662801553998153606775865027340583623737504752836950161480307306091972044325136654318470634270970481119615373216127224716703050950135265027468900620513606317179638695800547135347262644369289055809 (222 digits)
Wed Jul 17 19:09:49 2019  searching for 15-digit factors
Wed Jul 17 19:09:52 2019  commencing number field sieve (205-digit input)
Wed Jul 17 19:09:52 2019  warning: NFS input not found in factor base file
Wed Jul 17 19:09:52 2019  R0: 0
Wed Jul 17 19:09:52 2019  A0: 0
Wed Jul 17 19:09:52 2019  skew 1.00, size 0.000e+000, alpha 0.000, combined = 0.000e+000 rroots = 0
Wed Jul 17 19:09:52 2019  
Wed Jul 17 19:09:52 2019  commencing relation filtering
Wed Jul 17 19:09:52 2019  setting target matrix density to 120.0
Wed Jul 17 19:09:52 2019  warning: NFS input not found in factor base file
Wed Jul 17 19:09:52 2019  estimated available RAM is 4043.9 MB
Wed Jul 17 19:09:52 2019  commencing duplicate removal, pass 1

Would someone kindly post the correct fb file? Thanks!

I don't know who posted this composite, but the .fb (and .poly) files are a little strange. The given N value has a couple of small factors, and I've no idea where the skew value comes from.

But with that said, I don't understand my msieve is complaining the way it is. The .fb file does appear to have a valid number and polynomial; I just would have thought that it would find the small factors while "searching for 15-digit factors". What exact command line are you using?

fivemack · 2019-07-18, 07:28

msieve does find the small factors; this means the number it's looking at no longer matches the msieve.fb file and it complains at that stage.

I'd replace the first line with

Code:

N 7387537286900905815401063314500552382322057964368137200467347228657034281431673240267264397437745991785922791711680613214831602148453688733085622897860252661860028465100882538081348091993504514351219704193

There is also something else odd with the file attached, it has a blank line between each valid line, but that's not the case when I download https://escatter11.fullerton.edu/nfs...C205_M31_56.fb directly

swellman · 2019-07-18, 09:20

I posted C205_M31_56, with a polynomial generated on the cownoise site. This site generates a generic poly based on its internal values, so N in the poly file sometimes contains known small factors (though they are unknown to cownoise). I usually replace N with the correct composite as Fivemack suggests but I missed it here. AIUI, the poly is correct but inefficient, and msieve isn’t happy with it once the small factors are found.

As to the skew it’s what cownoise spit out. Interesting question.

As to the mysterious space appearing in the .fb file, I often see this on my Windows boxes. Windows appears not to handle line breaks generated by some of the factoring tools.

richs - did you replace N in the .fb file as Fivemack suggested? That should stop msieve’s complaints.

richs · 2019-07-18, 14:26

Msieve is now running fine after I replaced N in the fb and worktodo files. Thanks for the advice.

jyb · 2019-07-18, 17:48

Taking 12p5_233.

2019-07-18, 07:28	#503
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 2³·11·73 Posts	msieve does find the small factors; this means the number it's looking at no longer matches the msieve.fb file and it complains at that stage. I'd replace the first line with Code: N 7387537286900905815401063314500552382322057964368137200467347228657034281431673240267264397437745991785922791711680613214831602148453688733085622897860252661860028465100882538081348091993504514351219704193 There is also something else odd with the file attached, it has a blank line between each valid line, but that's not the case when I download https://escatter11.fullerton.edu/nfs...C205_M31_56.fb directly

2019-07-18, 09:20	#504
swellman Jun 2012 C14₁₆ Posts	C205_M31_56 I posted C205_M31_56, with a polynomial generated on the cownoise site. This site generates a generic poly based on its internal values, so N in the poly file sometimes contains known small factors (though they are unknown to cownoise). I usually replace N with the correct composite as Fivemack suggests but I missed it here. AIUI, the poly is correct but inefficient, and msieve isn’t happy with it once the small factors are found. As to the skew it’s what cownoise spit out. Interesting question. As to the mysterious space appearing in the .fb file, I often see this on my Windows boxes. Windows appears not to handle line breaks generated by some of the factoring tools. richs - did you replace N in the .fb file as Fivemack suggested? That should stop msieve’s complaints.

2019-07-18, 14:26	#505
richs "Rich" Aug 2002 Benicia, California 2³·3·5·11 Posts	C205_M31_56 Msieve is now running fine after I replaced N in the fb and worktodo files. Thanks for the advice.

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2019-07-15, 20:49	#497
jyb Aug 2005 Seattle, WA 1767₁₀ Posts	Taking 11p4_241.

2019-07-16, 09:21	#498
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 2³×11×73 Posts	Taking 11m9_241

2019-07-16, 20:32	#500
pinhodecarlos "Carlos Pinho" Oct 2011 Milton Keynes, UK 3·17·97 Posts	Taking C220_M31_k84

2019-07-18, 17:48	#506
jyb Aug 2005 Seattle, WA 3×19×31 Posts	Taking 12p5_233.