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2021-05-15, 00:16   #19
Batalov

"Serge"
Mar 2008
Phi(4,2^7658614+1)/2

59×163 Posts

Quote:
 Originally Posted by R. Gerbicz But you shouldn't fix base=3 to all numbers, because for other type of numbers: N could be a (trivial) pseudoprime for base=3, and you need to choose another base.
Exactly right. Eisenstein-Mersennes, for example, or also some Zhou's 3-3-1 primes