

A219048


Numbers k such that 3^k + 32 is prime.


16



2, 3, 4, 6, 23, 24, 38, 164, 172, 176, 207, 216, 251, 272, 424, 1112, 1318, 2072, 2664, 3143, 4704, 5236, 9526, 13064, 13523, 27111, 35931, 37504, 47542, 128656, 181551
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OFFSET

1,1


COMMENTS



LINKS



EXAMPLE

For k = 2, 3^2 + 32 = 41 (prime). Hence k = 2 is in the sequence.


MATHEMATICA

Do[If[PrimeQ[3^n + 32], Print[n]], {n, 10000}]


PROG



CROSSREFS

Cf. Sequences of numbers k such that 3^k + m is prime:
(m = 32) A219048, (m = 32) A219049, (m = 34) A219050, (m = 34) A219051. Note that if m is a multiple of 3, 3^k + m is also a multiple of 3 (for k greater than 0), and as such isn't prime.


KEYWORD

nonn,more


AUTHOR



EXTENSIONS



STATUS

approved



