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Old 2007-07-08, 01:07   #47
Citrix
 
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Jun 2003

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Another thing slowing up the sieve is that if gcd(x,max_prime)>1, then you would do 100's of additions just to for the factor, since it will never have a possible solution.

Extra additions for each factor=range_size*x/max_prime.

If max_prime=3 and x=720.


Then 240*2^23=2013265920 extra additions per factor.
So we should avoid these additions.

Last fiddled with by Citrix on 2007-07-09 at 00:51
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