20050711, 15:19  #1 
"Mark"
Apr 2003
Between here and the
5,953 Posts 
Finding primes with a PowerPC
For those of you with access a PowerPC, I want to direct you to Phil Carmody's PIES project (the pies_project group in Yahoo).
Over the weekend, I found this 100070 digit prime: Phi(3,1642659500503^4096) On my 2.5 GHz G5, the PRP test took only 4 minutes. According to Phil, a 2.0 GHz P4 does this same test in about 10 minutes which means that the PowerPC is very competitive with x86 for numbers of this form. AFAIK, it is the only prime on Chris Caldwell's list that has been found with a PowerPC CPU. Mark 
20050711, 16:48  #2  
Feb 2003
771_{16} Posts 
Quote:
 Thomas 

20050711, 18:46  #3  
"Mark"
Apr 2003
Between here and the
5,953 Posts 
Quote:


20050712, 08:00  #4  
Feb 2003
3561_{8} Posts 
Quote:
There is also the 87419 digit prime Phi(3,216582^8192), which was found on a 250MHz R10000 CPU (SGI). And a few more...  Thomas 

20050712, 12:31  #5  
"Mark"
Apr 2003
Between here and the
1741_{16} Posts 
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