mersenneforum.org - View Single Post - Cullen-Williams primes and Woodall-Williams primes

rogue · 2020-10-25, 20:23

Must not be too deeply searched. A pfgw script to b = 1000 yields the PRPs (944-1)*944^(944-1)-1 and (1622-1)*1622^(1622-1)-1

Here is the script. Use -f to trial factor before PRP testing.

ABC2 ($a-1)*$a^($a-1)+1 | ($a-1)*$a^($a-1)-1
a: from 1 to <whatever limit you want>

Running to a higher value to see if anything else shows up.

2020-10-25, 20:23	#3
rogue "Mark" Apr 2003 Between here and the 6162₁₀ Posts	Must not be too deeply searched. A pfgw script to b = 1000 yields the PRPs (944-1)944^(944-1)-1 and (1622-1)1622^(1622-1)-1 Here is the script. Use -f to trial factor before PRP testing. ABC2 ($a-1)$a^($a-1)+1 \| ($a-1)$a^($a-1)-1 a: from 1 to <whatever limit you want> Running to a higher value to see if anything else shows up. Last fiddled with by rogue on 2020-10-25 at 20:24