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%I #6 Dec 15 2017 17:37:11
%S 4,24,29,47,61,63,67,69,87,101,129,143,153,249,252,333,408,561,616,
%T 732,929,1349,3467,6156,6919,9244,14413,17128,20059,20169,20512,23479,
%U 24076,26208,27189
%N Numbers n such that 12321*2^n + 1 is prime.
%o (PARI) is(n)=ispseudoprime(12321<<n+1) \\ _Charles R Greathouse IV_, Jun 13 2017
%K nonn
%O 1,1
%A _Jason Earls_, Sep 25 2010
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