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Old 2022-01-07, 13:39   #1
nivek000
 
Dec 2021

1116 Posts
Default SNFS Performance

Does the performance of SNFS vary wildly? I saw a C155 number (a factor of a larger C205 number) factor with SNFS in a little over 2 hours. Now I have a C160 running (a factor of a larger C213 number) that is estimated to run like 35 hours. The stated scaled difficulty is definitely different (167 for the former vs 218 for the latter). I am just surprised that there can be such a longer runtime for just 5 additional digits. Is this an effect of polynomial selection? Is it possible YAFU (version 2.07) made a poor choice for the latter number, or is this par for the course with SNFS?

Thanks!

- Kevin
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