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Old 2021-07-10, 06:30   #45
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Jun 2003

3·17·101 Posts

Originally Posted by bur View Post
Interesting, is there a way to know if GNFS is faster or does it just turn out by experiment?
There is some rule of thumb regarding SNFS-GNFS equivalency. I think ratio of SNFS size:GNFS size of about 1.3 (?) is roughly equivalent. Here 175/119 = 1.47 is clearly favoring GNFS. SNFS 175 should be equivalent to GNFS 130 (+/-).

Of course, not all SNFS 175 are equal. And the 1.3 might not be the proper value. So, it is a good starting point to check if one or the other is clearly superior, but not definitive.

Last fiddled with by axn on 2021-07-10 at 06:30
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