20110621, 16:44  #1 
Sep 2010
Portland, OR
2^{2}×3×31 Posts 
Updating GNFS parameters
Just crossposting an advertisement in case anyone here doesn't follow the factoring forum. I'm starting a data collection effort to update the default GNFS parameters for larger numbers.
Folks working on Aliquot sequences probably factor lots of mediumtolarge composites with GNFS, so hopefully you all have (or will have) lots of data for me. Thanks! 
20110621, 16:56  #2 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
3·29·113 Posts 
M.Kamada's site has had everything you would possibly need  for years.
P.S. I agree, Tom. What I left unsaid was that graphs are only a tip of the iceberg; the site has all particulars in the report files for each (well, most) jobs. Everything can be screenscraped, the outliers (and the outlier contributors) can be flagged and then there will still be enough stats left for a decent analysis in the low range which is apparently of interest for most (aliquot) people. For high ranges, we can easily agree that using offtheshelf scripts is admittedly silly. Then again, "high" is different for every individual. Last fiddled with by Batalov on 20110621 at 17:54 Reason: added link, P.S. 
20110621, 17:11  #3 
(loop (#_fork))
Feb 2006
Cambridge, England
3^{3}·239 Posts 
I'm not quite sure that's true: it's not splitting out the numberofrelations figures by lpbr and by siever used, which are I believe important terms in the model, and a lot of it seems to be selfreflecting (eg Domanov is clearly using the linear fit of rlim against digit count to decide which rlim to use)

20110622, 21:19  #4  
Sep 2010
Portland, OR
2^{2}·3·31 Posts 
Quote:


20110623, 07:51  #6  
Oct 2004
Austria
9B2_{16} Posts 
Quote:
I have uploaded the logs of 332 GNFS factorizations (zipped, from aliquot search, done with FactMsieve.pl), ranging from c82 to c145 to sendspace: http://www.sendspace.com/file/i8h260 Last fiddled with by Andi47 on 20110623 at 07:51 Reason: ...and a ) was missing too ;) 

20110623, 17:36  #7 
Sep 2010
Portland, OR
2^{2}×3×31 Posts 
The logs on Kamada's site are not uniform; they probably depend on what tool/version was used for the factorization and whether the steps were performed manually or by the tool. But many of them do contain the number of relations, and also the other parameters, so they will definitely be a valuable source. I'll do some scripting to pull them all.
Thanks a lot for your logs Andi, that's great data. 
Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Automatically updating factordb  chris2be8  FactorDB  9  20120503 10:20 
report not updating ???  nobody  Information & Answers  3  20120426 14:31 
exponent not updating problem  Nestea80  Information & Answers  3  20081204 16:47 
Updating server with completed P1 runs  Prime95  Marin's Mersennearies  6  20031230 01:52 
Status Updating  SatishM  Software  4  20030405 16:08 