A176926 Primes of the form 2^k + 33.

37, 41, 97, 2081, 4129, 16417, 32801, 1048609, 1073741857, 1152921504606847009, 295147905179352825889, 37778931862957161709601, 324518553658426726783156020576289, 83076749736557242056487941267521569

Offset: 1

Author

Vincenzo Librandi, Apr 29 2010

Keywords

• nonn

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..25

Crossrefs

Cf. A000040, A247953 (corresponding k's).

Programs

Magma

[ a: n in [0..750] | IsPrime(a) where a is 2^n+33 ]

Mathematica

Select[Table[2^n + 33, {n, 300}], PrimeQ] (* Vincenzo Librandi Dec 01 2012 *)

Formula

a(n) = 2^A247953(n) + 33. - Elmo R. Oliveira, Nov 08 2023