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-   -   Team sieve #8: c157 from 4788.2422 (https://www.mersenneforum.org/showthread.php?t=12119)

Mini-Geek 2009-07-17 10:47

Or email or upload the log somewhere automatically, if extracting the factors from the file would be too hard. (and assuming the DB can't see the factors in a GGNFS log file)
It shouldn't be too hard to make a script to FTP the log to a site every hour. (you can set up a command for FileZilla, for example, to upload a specific file to a specific place, and then use something to get it to run every hour, even just a batch file with "filezilla [args] \n sleep 1h \n ...") That way, we could check the status of it as it goes and get the factors once they're ready.

bsquared 2009-07-17 14:48

[quote=10metreh;181353]Could you make a perl script that submits factors to the DB automatically?[/quote]

I meant, with luck the matrix will be finished by then. As of now, with 56894719 relations, 45324704 unique, we have:

[CODE]matrix is 5525542 x 5525789 (1619.6 MB) with weight 419589043 (75.93/col)
sparse part has weight 369304539 (66.83/col)
[/CODE]

ETA, 58 hours, so sunday evening, and I'll be back by then.

fivemack 2009-07-17 15:59

Sorry about this: we've had a collection of large and power-cut-causing thunderstorms in Cambridge and, rushing around to fix up things that had been unexpectedly power-cut, I forgot to upload 12-13 (the power-cut meant that the credentials required for uploading direct from my office got lost, I had to go via another machine ... insert general disorganised excuse here)

It's uploading now, should be with you in two hours (pesky asymmetric ADSL), but is almost certainly not worth waiting for.

bsquared 2009-07-17 16:41

[quote=fivemack;181379]Sorry about this: we've had a collection of large and power-cut-causing thunderstorms in Cambridge and, rushing around to fix up things that had been unexpectedly power-cut, I forgot to upload 12-13 (the power-cut meant that the credentials required for uploading direct from my office got lost, I had to go via another machine ... insert general disorganised excuse here)

It's uploading now, should be with you in two hours (pesky asymmetric ADSL), but is almost certainly not worth waiting for.[/quote]

We're several hours into the matrix, so probably not. Sorry, but I wasn't sure if I'd have your last range before I left, and just wanted to make sure something was running while I'm gone... which will be in another 30 min :)

bsquared 2009-07-20 04:21

Just finished, and reported to the [url=http://factorization.ath.cx/search.php?query=&se=1&aq=4788&action=last&fr=&to=]database[/url]:

[CODE]prp62 factor: 74399348298738292963450206114740189729787693944911556416750987
prp95 factor: 29291907986845892835734723953465997517662174446720902693683027129696345656977730249786953578507
elapsed time 62:23:11
[/CODE]

jrk 2009-07-20 06:10

Nice job.

Greebley 2009-07-20 11:23

So how much is the recommended ecm for a 62 digit factor? I am wondering how long ecm would have taken for this case.

Mini-Geek 2009-07-20 11:28

[quote=bsquared;181826]Just finished, and reported to the [URL="http://factorization.ath.cx/search.php?query=&se=1&aq=4788&action=last&fr=&to="]database[/URL]:

[code]prp62 factor: 74399348298738292963450206114740189729787693944911556416750987
prp95 factor: 29291907986845892835734723953465997517662174446720902693683027129696345656977730249786953578507
elapsed time 62:23:11
[/code][/quote]
What digit level did the ECM bring the c157 to? Did we have any good chance to have found that p62 factor?

10metreh 2009-07-20 11:33

[quote=Mini-Geek;181864]What digit level did the ECM bring the c157 to? Did we have any good chance to have found that p62 factor?[/quote]

I think we did just under t50 (check "Sequence 4788" for the exact curve count), and the chance to find the p62 was probably only about 1 or 2 percent. To find that p62 would probably require about twice t60. In short: [B]It was not an ECM miss.[/B]

Mini-Geek 2009-07-20 11:42

Ok, who ROT-13'd the title? :newcat:
[quote=10metreh;181865]I think we did just under t50 (check "Sequence 4788" for the exact curve count), and the chance to find the p62 was probably only about 1 or 2 percent. To find that p62 would probably require about twice t60. In short: [B]It was not an ECM miss.[/B][/quote]
Thanks.

10metreh 2009-07-20 11:51

[quote=Mini-Geek;181867]Ok, who ROT-13'd the title? :newcat:[/quote]

:loco:


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