View Single Post
Old 2011-02-19, 23:17   #2
Batalov
 
Batalov's Avatar
 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2

23×5×229 Posts
Default

Yep, it is 7,359-.
Cofactor c224 is composite.

(It must have divided a number from the list because othewise Paul's form wouldn't accept it. This sudoku puzzle was easy.)

Last fiddled with by Batalov on 2011-02-19 at 23:18
Batalov is offline   Reply With Quote