Thread: Sieving with NewPGen View Single Post
 2005-09-24, 19:09 #3 Flatlander I quite division it     "Chris" Feb 2005 England 31×67 Posts Assuming you have chosen k.b^n-1 with k fixed in NewPGen: My testing of various 'k's (between 1000 and 20000) up to an n of 40000 indicates that a higher number of 'n's left after sieving probably means there will be more primes produced. I suppose it is reasonable to assume this holds for higher n and larger k? I don't think you are doing anything wrong. I have never had to sieve passed 500-600 billion. Your larger amount of 'n's left suggest to me the possibility of more primes than I have been finding at those ranges. But, of course, it will take you longer to test all those 'n's ! I only ever sieve to the level suggested in the instructions for NewPGen. Happy hunting! (Not my use ofthe words ''probably', 'suggest' and 'possibility' ! )