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 2004-12-30, 15:02 #12 Xyzzy     Aug 2002 23×1,051 Posts GMP-ECM @ 50 digits: Stage 1 = 10m29s Stage 2 = 10m16s 207MB used for Stage 2...
2004-12-30, 15:32   #13
smh

"Sander"
Oct 2002
52.345322,5.52471

22458 Posts

Quote:
 Originally Posted by Xyzzy I guess I'll start on the 50 digit depth... Does anybody know how much a curve at 50 on the c195 is worth compared to a curve at 50 on the base number? Or is it the same?
The same. you're trying to factor the same number. It's just that some known factors are left out.

 2004-12-30, 16:16 #14 geoff     Mar 2003 New Zealand 13·89 Posts Code: 815 (5,163) C195 The numbers in brackets refer to the algebraic factors (2^5-1 and 2^163-1), the ones outside the brackets (none in this case) were found by computation. I think that if you use gmp-ecm on the C195 it will recognise that this is a factor of 2^815-1 and do the actual computation on 2^815-1 if that works out to be faster.
 2005-01-03, 21:10 #15 Xyzzy     Aug 2002 23·1,051 Posts 290 curves done with B1=43e6 and B2=178426462988...
 2005-01-04, 20:39 #16 ABo   Jan 2005 516 Posts To celebrate the holiday season, I ran 1000 curves on M815 during the last few days: [Tue Jan 04 19:23:50 2005] M815 completed 200 ECM curves, B1=44000000, B2=4290000000 [Tue Jan 04 20:48:24 2005] M815 completed 400 ECM curves, B1=44000000, B2=4290000000 [Tue Jan 04 21:12:30 2005] M815 completed 400 ECM curves, B1=44000000, B2=4290000000 Now it's time to return again to my normal exponents (which are slightly higher, actually)! Arjen.
 2005-01-05, 00:36 #17 Carlos     Jan 2005 13 Posts Here are 40 runs om c195. GMP-ECM 5.0.3 [powered by GMP 4.1.4] [ECM] Input number is 60283086354130682630820125474027075054073109566747418744871401101089995040865795729925039217435476952986222 8623065037288911156431857765333506478693299526142358853365961098168445571416785159158751 (195 digits) Run 40 out of 0: Using B1=43000000, B2=178426462988, polynomial Dickson(30), sigma=4197067969 Step 1 took 1919360ms Step 2 took 1510250ms Carlos
 2005-01-05, 13:45 #18 thomasn   Jun 2003 2·59 Posts [Wed Jan 5 14:13:45 2005] M815 completed 100 ECM curves, B1=44000000, B2=4290000000 Thomas
 2005-01-08, 17:05 #19 thomasn   Jun 2003 2·59 Posts [Sat Jan 8 14:17:22 2005] M815 completed 500 ECM curves, B1=11000000, B2=1100000000 Thomas
 2005-01-08, 17:27 #20 thomasn   Jun 2003 2·59 Posts Summary, work done on M815 : Code: B1 : 11000000 thomasn 500 1 1100000000 #19 500 total this period 500 Grand total 3890 of 10600 curves done. B1 : 44000000 xyzzy 290 2,12 178426462988 #15 614 ABo 1000 1 4290000000 #16 1000 Carlos 40 2,12 178426462988 #17 84 thomasn 100 1 4290000000 #18 100 Total this period 1798 Grand total : 1801 of 19300 curves. Cool! We are making rapid progress. I will mail the curves to George. Thomas
 2005-01-08, 18:26 #21 thomasn   Jun 2003 11810 Posts [Sat Jan 08 09:34:42 2005] M815 completed 1000 ECM curves, B1=11000000, B2=1100000000 Thomas
 2005-01-11, 20:34 #22 Xyzzy     Aug 2002 23×1,051 Posts 276 curves done with B1=43e6 and B2=178426462988...

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