20081026, 18:18  #1 
Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
5,743 Posts 
P1 and srfile
when would you want to use:
srfile p 2 what sort of project would need this 
20081028, 17:36  #2 
Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
5,743 Posts 
why has no one answered is it because i didnt explain my question properly or because people dont know an answer
i will restate my question why would a project need to be able to p1 factoring optimal for if a factor is found several primality tests will be saved when would this be necessary 
20081028, 17:52  #3  
A Sunny Moo
Aug 2007
USA (GMT5)
79^{2} Posts 
Quote:
Hope this helps! Max 

20081028, 18:42  #4 
Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
5,743 Posts 
when would finding a factor save several primality tests

20081028, 19:01  #5 
A Sunny Moo
Aug 2007
USA (GMT5)
1100001100001_{2} Posts 
Depends on whether or not the project plans to do doublechecking, and the status of their doublecheck effort. For example, say you have a number that's farther ahead in the sieve range and hasn't been tested at all yet. A factor for that number will save two tests. Likewise, a number that has been tested once but not doublechecked yet will have one test saved if a factor is found. And, of course, if the number has been both tested and doublechecked, then the factor saves zero tests.

20081028, 20:17  #6 
Jun 2003
5^{2}·191 Posts 
What has srfile got to do with P1 factoring?!

20081028, 20:23  #7 
A Sunny Moo
Aug 2007
USA (GMT5)
6241_{10} Posts 

20081104, 17:01  #8 
Jul 2003
wear a mask
2×733 Posts 
P1 factoring will become useful for the Sierpinski/Riesel Base 5 project before we reach the end of our dat file.
The largest numbers in our dat file are of size 5^n, where n = 2,000,000. Sometime after our testing queues reach the n>1,000,000 mark, P1 factoring will become useful. Last fiddled with by masser on 20081104 at 17:02 
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