20050407, 15:43  #1 
Mar 2005
Poland
5×7 Posts 
PRP3 segfault with big numbers.
PRP3 v 3.1.0 crashes, when I try to process very big number, exceeding 10M in size (ie 20*8087^3453301+1).
What are current limits of PRP3? Last fiddled with by Washuu on 20050407 at 15:56 
20050407, 15:54  #2 
P90 years forever!
Aug 2002
Yeehaw, FL
1F94_{16} Posts 
Is this a P4? IIRC prp3 only works on SSE2 machines. I need to build a new executable. In the meantime, you could use LLR 3.5.

20050407, 15:55  #3  
Mar 2005
Poland
5·7 Posts 
Quote:


20050407, 15:58  #4 
Mar 2005
Poland
100011_{2} Posts 
And the same for PRP.EXE and OpenPGFW. Hmmm, is PRIME95 only 10Mdigit enabled program? ;)
EDIT: checked also on "true" P4 2,8 Ghz. The same problem. : Last fiddled with by Washuu on 20050407 at 16:04 
20050407, 16:22  #5 
P90 years forever!
Aug 2002
Yeehaw, FL
2^{2}×43×47 Posts 
I missed the 8087 base. I'll build a new prp3 and test it. You should be aware that these PRP test will be very slow. About 3 times slower than a Mersenne Test.
The limit of prp3 on numbers of this type should be about 39 million bits. 
20050407, 16:30  #6  
Mar 2005
Poland
5·7 Posts 
Quote:
But my question is still current: what are current expected limits (apart from computer resources)? 

20050407, 17:08  #7  
P90 years forever!
Aug 2002
Yeehaw, FL
2^{2}×43×47 Posts 
Quote:
Testing k*2^n+/1 your limit for n will depend on k. For small k, n up to 70+ million. For large k, n up to 39 million. 

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