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Old 2007-11-21, 17:25   #5
bsquared
 
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"Ben"
Feb 2007

3,371 Posts
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Maybe your factor base is just too big. More primes -> more trial division.

My siqs implementation wants 913 relations normally. In this case, it uses 0.436 sec sieving and 0.19 sec doing trial division.

If I force it to use a factor base of size 1826 (x2 bigger), this becomes 0.27 sec sieving and 0.61 sec doing trial division, for a net slowdown.

- ben
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