Is 1! + 11! + 300! prime?
Jonathan Post
jvospost3 at gmail.com
Sat Aug 12 21:23:12 CEST 2006
Is 1! + 11! + 300! prime? It has 602 digits, and the Alpertron calls it
"unknown" as to primality after half an hour on my Linux box. This is the
first such case I've encountered in my A! + B! + 1! primality search.
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