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Primes of the form 15*2^k + 1.
4

%I #13 Jan 27 2023 08:11:13

%S 31,61,241,7681,15361,61441,2013265921,2061584302081,4123168604161,

%T 263882790666241,4222124650659841,4533471823554859405148161,

%U 77884452878022414427957444938301441,5612166287350667205902149757630526795478780965027841

%N Primes of the form 15*2^k + 1.

%Y Primes in A195744.

%K nonn

%O 1,1

%A _Brad Clardy_, Sep 23 2011

%E Offset corrected and name changed by _Arkadiusz Wesolowski_, Sep 23 2011