A180924 Numbers n such that 12321*2^n + 1 is prime.

4, 24, 29, 47, 61, 63, 67, 69, 87, 101, 129, 143, 153, 249, 252, 333, 408, 561, 616, 732, 929, 1349, 3467, 6156, 6919, 9244, 14413, 17128, 20059, 20169, 20512, 23479, 24076, 26208, 27189

Offset: 1

Author

Jason Earls, Sep 25 2010

Keywords

• nonn

Programs

PARI

is(n)=ispseudoprime(12321<Charles R Greathouse IV, Jun 13 2017