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Forum: Miscellaneous Math 2021-04-28, 13:38
Replies: 13
Views: 701
Posted By charybdis
As far as I know no-one has systematically...

As far as I know no-one has systematically searched for 2-PSPs beyond 2^64. If you want to get to 2^79, you'll probably need lots of fast GPUs, lots of CPUs, and some very efficient code. But as...
Forum: Miscellaneous Math 2021-04-27, 23:00
Replies: 13
Views: 701
Posted By charybdis
Feitsma's data...

Feitsma's data (http://www.janfeitsma.nl/math/psp2/statistics) suggests a rough 4.5-times increase in the number of 2-PSPs for each additional 5 powers of 2. So the file for 2^79 would be ~90 times...
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