A137654 Numbers k such that 12^k + 11 is prime.

1, 4, 15, 157, 432, 6008, 14821, 23812, 24192

Offset

1,2

Comments

a(7) > 8000. - Jinyuan Wang, Mar 03 2020

Links

Table of n, a(n) for n=1..9.

Mathematica

Do[If[PrimeQ[(12^n+11)], Print[n]], {n, 2000}]
Select[Range[500], PrimeQ[12^#+11]&] (* Harvey P. Dale, Oct 15 2015 *)

Prog

(PARI) is(n)=ispseudoprime(12^n+11) \\ Charles R Greathouse IV, Jun 06 2017

Crossrefs

Cf. A137652, A137653.

Sequence in context: A037447 A197753 A197934 * A349402 A277509 A195569

Adjacent sequences: A137651 A137652 A137653 * A137655 A137656 A137657

Keyword

nonn,more

Author

Zak Seidov, Feb 01 2008

Extensions

a(6) from Jinyuan Wang, Mar 03 2020

a(7)-a(9) from Michael S. Branicky, Mar 15 2023

Status

approved