I'm mystified.

When I did the benchmark test in Prime95 (v24.14), the screen output asserted 
that
all these times referred to factoring M35,000,011.


Best time for 58 bit trial factors: 40.217 ms.
Best time for 59 bit trial factors: 40.172 ms.
Best time for 60 bit trial factors: 40.231 ms.
Best time for 61 bit trial factors: 40.305 ms.
Best time for 62 bit trial factors: 76.467 ms.
Best time for 63 bit trial factors: 76.608 ms.
Best time for 64 bit trial factors: 169.511 ms.
Best time for 65 bit trial factors: 172.125 ms.
Best time for 66 bit trial factors: 175.240 ms.
Best time for 67 bit trial factors: 175.982 ms.


The number of factors of 2^p - 1 to try up to 2^m goes as (2^m)/p
Why don't the times follow suit?

The only feature I understand is the jump at 64 bits, since the division 
suddenly gets harder.

I think they must have been changing p.

Suggestions welcome

David Eddy






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