p-1

2003-12-02, 01:45

I just came across p-1 testing. There seem to be two stages and it seems to be searching for factors near some specified bounds, if i got that right.
I read a message like "3.2% chance to find a factor". Is this chance for both stages combined? Or 3.2% for stage 1 and another 3.2% for stage 2? The prime95 help file doesn't say much about that IIRC.

Prime Monster · 2003-12-02, 01:55

Check out the math page on the GIMPS server. A bit down on the page. There is an explanation there.

PM

Prime95 · 2003-12-02, 22:03

3.2% chance would be your chance of finding a factor after running both stage 1 and stage 2

2003-12-02, 23:00

Thanks alot.

Btw: Congratulations for M40!

2003-12-02, 01:45	#1
Unregistered 9985₁₀ Posts	p-1 I just came across p-1 testing. There seem to be two stages and it seems to be searching for factors near some specified bounds, if i got that right. I read a message like "3.2% chance to find a factor". Is this chance for both stages combined? Or 3.2% for stage 1 and another 3.2% for stage 2? The prime95 help file doesn't say much about that IIRC.

2003-12-02, 01:55	#2
Prime Monster Aug 2002 2²×5×13 Posts	Check out the math page on the GIMPS server. A bit down on the page. There is an explanation there. PM Last fiddled with by Prime Monster on 2003-12-02 at 01:56

2003-12-02, 22:03	#3
Prime95 P90 years forever! Aug 2002 Yeehaw, FL 3⁵·31 Posts	3.2% chance would be your chance of finding a factor after running both stage 1 and stage 2

2003-12-02, 23:00	#4
Unregistered 225D₁₆ Posts	Thanks alot. Btw: Congratulations for M40!