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Old 2018-01-15, 22:09   #1
lukerichards's Avatar
"Luke Richards"
Jan 2018
Birmingham, UK

25·32 Posts
Default Proth and Riesel Primes

I may be missing something here, but why in the definition of Proth (k\cdot2^n + 1) and Reisel (k\cdot2^n - 1) is there the requirement that k < 2^n?

There are primes which exist when k > 2^n so is it for the purposes of more efficient primality testing?
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