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Old 2021-09-25, 08:10   #6
"Tucker Kao"
Jan 2020
Head Base M168202123

25·3·7 Posts

Originally Posted by Zhangrc View Post
Yes if you want to find more factors, no if you want to save more time.
The recommended TF depth is only 2^76 for exponents from M107M to M119M. It'll definitely cost a lot more time to go up to 2^78.

I'm running P-1 on M115173323, the P-1 with B1 = 700,000 and B2 = 26,000,000 will only cost 8 hours on my machine.

TF from 2^76 to 2^77 will cost 132.88 GHz days on GPU
TF from 2^77 to 2^78 will cost 265.76 GHz days on GPU

Ask ViliamF, he has a lot of more experience than I do, that was what he told me. Apply the corresponding higher P-1 bounds if raise the TF bits.

Last fiddled with by tuckerkao on 2021-09-25 at 08:18
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