20051220, 12:04  #34  
Feb 2004
France
2×457 Posts 
Quote:
Tony 

20051220, 19:22  #35 
Bemusing Prompter
"Danny"
Dec 2002
California
11×211 Posts 
Let's hope that F14 isn't a semiprime whose factors are on the same order of magnitude (a la RSA). :P

20051220, 20:23  #36 
Aug 2002
Buenos Aires, Argentina
2·3·223 Posts 
The probability that a number of the magnitude of F14 (4933 digits) has only two factors is small and that both have about same size is very small.

20051221, 19:17  #37 
Feb 2003
2×59 Posts 
I did 400 curves on F14 last year (on 4 P4 and Xeon computers at work, 100 curves each) with B1=44000000 and I never thought about reporting them ... a lot of work down the drain since I didn't save the results.txt to prove it

20051222, 00:09  #38 
P90 years forever!
Aug 2002
Yeehaw, FL
1C38_{16} Posts 
ECM curve counts are on the honor system, results.txt is not required. I'm adding your curves now.

20051222, 08:11  #39 
Feb 2003
2×59 Posts 
Thank you! I am positive I did those curves, in fact it was more than that but the second run got interrupted so I prefer to report 400 to stay on the safe side. :)

20051222, 08:13  #40 
"Nancy"
Aug 2002
Alexandria
2,467 Posts 
Did you check if there were any factors in the results.txt file before they were lost?
Alex 
20051222, 09:18  #41  
Feb 2003
2·59 Posts 
Quote:
There weren't any factors. Last fiddled with by flava on 20051222 at 09:19 

20060117, 20:46  #42  
Feb 2004
France
392_{16} Posts 
11000000 and then 44000000
Quote:
You did not mean: 11M 12M 13M ... 44M ?! You meant: 11M 11M ... and then run curves with B1=44000000 . Right ? I put: ECM2=1,2,16384,1,12000000,0,100,0,0 ECM2=1,2,16384,1,13000000,0,100,0,0 in the worktodo file. What is the consequence ? I got: 2^16384+1 completed 100 ECM curves, B1=12000000, B2=1200000000 And why 11000000 and 44000000 ? and not 22000000 ? Tony 

20060118, 03:05  #43 
"Phil"
Sep 2002
Tracktown, U.S.A.
10001011110_{2} Posts 
B1=11000000 should maximize the chances of finding a possible 45digit factor, and B1=44000000 should maximize the chances of finding a possible 50digit factor. That is why the bounds are set up the way they are on http://www.mersenne.org/ecmf.htm . Please report your curves to George anyway, because he may be able to credit them as equivalent to maybe 105 or 110 curves at B1=11000000.
I noticed over the weekend that a substantial number of curves were added for F14 at B1=44000000, 918 curves or so. Who ran these? Nice work! Were they run on Prime95, GMPECM, or a combination of the two? 
20060118, 06:51  #44 
"Nancy"
Aug 2002
Alexandria
2,467 Posts 
That was me. It was a combination of Prime95 for stage 1 and GMPECM for stage 2.
Alex 