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

1, 4, 15, 157, 432, 6008, 14821, 23812, 24192, 53821

Offset: 1

Author

Zak Seidov, Feb 01 2008

Keywords

• nonn
• more

Comments

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

Crossrefs

Cf. A137652, A137653.

Programs

Mathematica

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

PARI

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

Extensions

a(6) from Jinyuan Wang, Mar 03 2020

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

a(10) from Michael S. Branicky, Nov 30 2024