vjs
05-15-2006, 10:20 AM
Hey all,
Just letting everyone know that we have lost a few heavy hitters in factoring.
For those of you who don't know P-1 factoring trys to factor k/n pair just ahead of those we are going to test for primality. What this does is remove canidiates from the que which are certainly not prime faster and more effectively than regular testing.
This is somewhat of a big deal since it's easy to P-1 test in theory and those which P-1 eliminates won't have to be tested in the future (EVER!!!).
What this mean for regular testing is if a particular wasn't P-1 there is less chance that your testing the sought after prime.
The only way to help this is slow down main testing (not a good solution) by doing more secondpass testing. (I.E. entering your username followed by QQQ secondpass , for myself vjsQQQsecondpass). Or have just a few more people factor using P-1.
There is alot more in the factoring thread but personally I'd like to see all tests factored to at least B1=30000 B2= 340000 prior to P-1 testing. Perfered is somewhere around B1=50K B2=600K, but your best bet is probably using the prime95 default. Garo once said a little P-1 is better than no P-1 at all I can't agree more.
E, has been helping some people get started in the co-ordination thread but we still probably need another 5 people to build up the factoring vs testing buffer we once had.
If your interested ask some question here or headover to the factoring subsection and pick yourself up a range. It's not that tough but a little difficult to get started for the first timer, we are all here to help. I'd also like to point out there is a guide and prime95 is probably the best program to use.
Just letting everyone know that we have lost a few heavy hitters in factoring.
For those of you who don't know P-1 factoring trys to factor k/n pair just ahead of those we are going to test for primality. What this does is remove canidiates from the que which are certainly not prime faster and more effectively than regular testing.
This is somewhat of a big deal since it's easy to P-1 test in theory and those which P-1 eliminates won't have to be tested in the future (EVER!!!).
What this mean for regular testing is if a particular wasn't P-1 there is less chance that your testing the sought after prime.
The only way to help this is slow down main testing (not a good solution) by doing more secondpass testing. (I.E. entering your username followed by QQQ secondpass , for myself vjsQQQsecondpass). Or have just a few more people factor using P-1.
There is alot more in the factoring thread but personally I'd like to see all tests factored to at least B1=30000 B2= 340000 prior to P-1 testing. Perfered is somewhere around B1=50K B2=600K, but your best bet is probably using the prime95 default. Garo once said a little P-1 is better than no P-1 at all I can't agree more.
E, has been helping some people get started in the co-ordination thread but we still probably need another 5 people to build up the factoring vs testing buffer we once had.
If your interested ask some question here or headover to the factoring subsection and pick yourself up a range. It's not that tough but a little difficult to get started for the first timer, we are all here to help. I'd also like to point out there is a guide and prime95 is probably the best program to use.