20120824, 12:45  #12  
"James Heinrich"
May 2004
exNorthern Ontario
2×1,447 Posts 
Quote:
My PHP programming knowledge is reasonably good, but my math knowledge is very very poor, so I'm no good at PARI programming because, well, I don't know what I'm doing 

20130203, 21:04  #13 
Mar 2009
Indiana, United Stat
2^{4}×3 Posts 
Factors of 2^(repunit)1
I must be missing some information. What programs besides GIMPS are you using? I want to find out if there’s a program that can find at least one factor of 2^((10^191)/9)1 and/or 2^((10^231)/9)1. I wondered if I should check a C or Cygwin program before going onto GIMPS. I’ve been checking Operation Billion Digits at web pages like these:
http://www.mersenneforum.org/showthread.php?t=15294 http://home.earthlink.net/~elevensmo....html#Download http://www.moregimps.it/mersennetest/howto.php http://www.moregimps.it/billion/download1.php (I can’t get Cygwin to work for some reason. I know I got it working 4 years ago.) About how many weeks would it take to find a factor? What do you suggest that I do? Edit: At Cygwin setup, I'm not understanding which packages to download. Last fiddled with by stathmk on 20130203 at 21:26 
20130203, 21:15  #14  
"Åke Tilander"
Apr 2011
Sandviken, Sweden
2·283 Posts 
Quote:


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