A259530 Numbers k such that 136^k - 135^k is prime.

2, 7, 53, 103, 1171, 1699, 5953, 29131

Offset: 1

Author

Michael P. May, Jun 29 2015

Keywords

• nonn
• more

Crossrefs

Cf. A254298.

Programs

Magma

[n: n in [0..200] | IsPrime(136^n-135^n)]; // Vincenzo Librandi, Jul 01 2015

Mathematica

Select[Range[2, 200], PrimeQ[(136^# - 135^#)] &] (* Vincenzo Librandi, Jul 01 2015 *)

PARI

is(n)=ispseudoprime(136^n-135^n) \\ Charles R Greathouse IV, Jun 13 2017

Extensions

a(5)-a(6) from Vincenzo Librandi, Jul 01 2015

a(7) from Tim Johannes Ohrtmann, Mar 16 2018

a(8) from Michael S. Branicky, Oct 14 2024