How do I run factmsieve.pl? I can factor using factlat.pl with no problems, using the latest core 2 distribution. factmsieve terminates after a short print out...
... Usually you run it just like factlat.pl. There are a couple of gotchas in the script. First, of course, is to put a working binary of msieve (or msieve.exe...
i have downloaded ggnfs new version can anybody suggest me how i can compile that on redhat linux operating system (i have very nice environment to run it for...
Summary of the problem. GGNFS crashes 85% of the time on C85-C115 factorisations when run through fact*.pl (* is Lat or Msieve) due to pol51m0b failure. The ...
I forgot to add that when I rerun the program after the crash, in all cases the program resumes perfectly and goes on to successfully factor the number....
... Yes, I've seen this bug on some small numbers. It's not really a crash, it's an abnormal exit. Some assertions fail in the code's logic and it exits. Aside...
... Thanks Serge, I think the above workaround is within my limited range of perl skills. I'll replace the "die if" with a "last if" and see how it goes. The...
Thank you Serge! Finally I got the factoring running. I will also use your parameter set for similar numbers in my list. I have picked up my old search for...
... after ... so ... You can also do "next if". "last is" will also work because I've noticed those lambda-comps starting after quite a few iterations - when...
... I remembered about your search. In fact I've mentioned your collection somewhere in this thread: http://mersenneforum.org/showpost.php? p=153426 Syd later...
In a cygwin shell, a correctly installed cygwin does not require system paths prepended to commands in order to issue standard utilities like cat, gzip etc,...
... Let me look into that. The script wasn't working for me in cygwin without making changes, it might have been the execute permissions as well so I will...
... Y1 should be > 0 for some old siever binaries, I suspect. For some reason, it prevents it from finding the root of the rational polynomial Y1 * m + Y0 = 0....
... Again, this is the case when Y1<0. Make a simple change Y1: 1061520150601 Y0: -2535301200456458802993406410752 ...and that's all. Check for this problem...
When I get the chance I hope to put this information on the GGNFS sourceforge page, but for now I have created a beginner's guide designed to help experienced...
... The factoring took 16 hours with SNFS difficulty 152 giving pp43 + pp82 on a 2.5 GHz Core 2 Quadro using one processor for this job. /Torbjörn Alm...
How can i use these polys in a polyfile? 512 bit 155 digit RSA modulus. 256 bit 78 digit P and Q - factors polynomial(from RSA-155 factoring challenge): ...
... The size of the factors has no bearing on how you set up the number field sieve. The skew must not be 1, it has to be much larger but the best value is the...
Jason Papadopoulos
jasonp@...
Mar 8, 2009 1:06 pm
2349
Hello all. I'm new to the list and I haven't done any NFS work for quite a while. About a week ago I was posessed to redo the factorization of an RSA number....
... The polynomial was used in the RSA-155 challenge: http://ftp.cwi.nl/herman/NFSrecords/RSA-155 No skew was listed.. In the sieve process what parameter do...
... Brian Murphy's NFS poly selection thesis contains more details about this polynomial, the skew was 10800. Thorsten Kleinjung's poly selection paper gives...
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