mersenneforum.org - View Single Post - P-1 discussion

geoff · 2007-04-04, 04:59

Is it worth using higher P-1 bounds than the Prime95 default, since unlike GIMPS, in this project finding a P-1 factor can also speed up the sieve a little bit?

The last field of the PFactor= line is the number of LL tests saved by finding a factor. I think this should be at least 2, maybe 3.

2007-04-04, 04:59	#6
geoff Mar 2003 New Zealand 10010000101₂ Posts	Is it worth using higher P-1 bounds than the Prime95 default, since unlike GIMPS, in this project finding a P-1 factor can also speed up the sieve a little bit? The last field of the PFactor= line is the number of LL tests saved by finding a factor. I think this should be at least 2, maybe 3.