View Single Post
Old 2020-10-22, 10:47   #1
fivemack
(loop (#_fork))
 
fivemack's Avatar
 
Feb 2006
Cambridge, England

11000111010112 Posts
Default Primes made mostly of nines

10^10000 - 10^8668 - 1 is a pseudoprime; can I assert that it's prime because we've got a very boring factorisation of 86.68% of n+1 ?
fivemack is offline   Reply With Quote