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 2010-01-04, 08:07 #1 10metreh     Nov 2008 44228 Posts GMP-ECM top 10 For those of you who aren't reading the "Top 10 GMP-ECM for the year" thread in the GMP-ECM forum, you currently have a good chance of getting in the top 10 for 2010 for a few days. There are only two factors on the list, so any ECM factor will do. I don't expect Paul Zimmermann will like really tiny factors, but I guess anything above p30 will probably be accepted. And aliquot sequences are good places for finding p30s, so if you find one, be sure to send it to zimmerma at loria dot fr.
2010-01-04, 08:53   #2
Batalov

"Serge"
Mar 2008
Phi(3,3^1118781+1)/3

236616 Posts

Quote:
 Originally Posted by FactorEyes That's why I only do ECM in early January.
Don't expect even p40-p45-s to survive for a week.

 2010-01-04, 15:51 #3 yoyo     Oct 2006 Berlin, Germany 10001110002 Posts Ok, Ok, I'm working to enlarge the list and reported a P48. yoyo
 2010-01-06, 20:59 #4 EdH     "Ed Hall" Dec 2009 Adirondack Mtns 2·3·72·11 Posts I'm not able to bring up the link (the list) from above, to look at the list(s), but should I be watching my aliquot sequences for large factors(>30)? If so, what info should be provided to the address given in the last message?
2010-01-06, 21:29   #5
Mini-Geek
Account Deleted

"Tim Sorbera"
Aug 2006
San Antonio, TX USA

17×251 Posts

Quote:
 Originally Posted by EdH I'm not able to bring up the link (the list) from above, to look at the list(s), but should I be watching my aliquot sequences for large factors(>30)?
You really don't need to, but if you want to get 5 minutes (depending on how long it takes someone to submit a couple larger factors) of not-quite-fame go ahead.
Quote:
 Originally Posted by EdH If so, what info should be provided to the address given in the last message?
Judging by http://74.125.47.132/search?q=cache:mRik2x2cEv4J:www.loria.fr/~zimmerma/records/ecmnet.html+http://www.loria.fr/~zimmerma/records/ecmnet.html&cd=1&hl=en&ct=clnk&gl=us&client=firefox-a (a Google cache of the page), I'd say the factor, the number it's from, the B1 used, the sigma used, the date of discovery, your name, and optionally a web site.

 2010-01-06, 21:33 #6 yoyo     Oct 2006 Berlin, Germany 23·71 Posts Just send the gmp-ecm log where the factor was found. yoyo
 2010-01-06, 23:26 #7 EdH     "Ed Hall" Dec 2009 Adirondack Mtns 62428 Posts Thanks! Now for my next display of ignorance: How do I know if a prp factor in my aliqueit.log is from gmp-ecm? Would this tiny example be from gmp-ecm or possibly something else? Code: [Dec 15 2009, 16:47:54] c94: running 214 ecm curves at B1=5e4... Using B1=50000, B2=12746592, polynomial x^2, sigma=1290104490 Step 1 took 703ms Step 2 took 489ms ********** Factor found in step 2: 99908276981014568003081 [Dec 15 2009, 16:49:15] *** prp23 = 99908276981014568003081 The following came next: Code: [Dec 15 2009, 16:49:15] Cofactor 13381851645687802199424767164095485029664345359039872851227063260140449 (71 digits) [Dec 15 2009, 16:49:15] *** prp71 = 13381851645687802199424767164095485029664345359039872851227063260140449 Is the first one from gmp-ecm and the second one from some other program run by aliqueit? Thanks for any help...
2010-01-06, 23:30   #8
mdettweiler
A Sunny Moo

Aug 2007
USA (GMT-5)

3×2,083 Posts

Quote:
 Originally Posted by EdH Thanks! Now for my next display of ignorance: How do I know if a prp factor in my aliqueit.log is from gmp-ecm? Would this tiny example be from gmp-ecm or possibly something else? Code: [Dec 15 2009, 16:47:54] c94: running 214 ecm curves at B1=5e4... Using B1=50000, B2=12746592, polynomial x^2, sigma=1290104490 Step 1 took 703ms Step 2 took 489ms ********** Factor found in step 2: 99908276981014568003081 [Dec 15 2009, 16:49:15] *** prp23 = 99908276981014568003081 The following came next: Code: [Dec 15 2009, 16:49:15] Cofactor 13381851645687802199424767164095485029664345359039872851227063260140449 (71 digits) [Dec 15 2009, 16:49:15] *** prp71 = 13381851645687802199424767164095485029664345359039872851227063260140449 Is the first one from gmp-ecm and the second one from some other program run by aliqueit? Thanks for any help...
The first is from GMP-ECM; the second is a cofactor left over after Aliqueit divided out all factors. In this case the cofactor was prime, so the line was finished. If it was composite, Aliqueit would have continued on factoring it.

2010-01-06, 23:34   #9
EdH

"Ed Hall"
Dec 2009

2·3·72·11 Posts

Quote:
 Originally Posted by mdettweiler The first is from GMP-ECM; the second is a cofactor left over after Aliqueit divided out all factors. In this case the cofactor was prime, so the line was finished. If it was composite, Aliqueit would have continued on factoring it.
Thanks! I'll have a look through my logs to see if anything is worthy of entry...

 2010-01-07, 02:32 #10 Batalov     "Serge" Mar 2008 Phi(3,3^1118781+1)/3 2×23×197 Posts Hint: You can search for the word 'Neat' in aliquiet.log. (Also, you can adjust the 'Neat' reporting thresholds in aliquiet.ini; I've set them to 40 long ago, but now upped to 45. "I don't need sugar, I am sweet enough." ©)
2010-01-07, 02:52   #11
EdH

"Ed Hall"
Dec 2009

323410 Posts

Quote:
 Originally Posted by Batalov Hint: You can search for the word 'Neat' in aliquiet.log. (Also, you can adjust the 'Neat' reporting thresholds in aliquiet.ini; I've set them to 40 long ago, but now upped to 45. "I don't need sugar, I am sweet enough." ©)
Now, you tell me!

I just got done writing/running a program to check the aliqueit.log files on a couple linux machines and was getting ready to port it over to my WinXP. At least I saw this before doing the porting.

My neat setting for ecm is already at 45, which explains why I didn't see any messages; the largest prp I found on the linux machines was 41.

Thanks!