A104067 Primes of the form 2^k + 13.

17, 29, 269, 1048589, 274877906957, 18446744073709551629, 1208925819614629174706189, 7957171782556586274486115970349133441607298412757563479047423630290551952200534008528909

Offset: 1

Author

Roger L. Bagula, Mar 02 2005

Keywords

• nonn

Programs

Magma

[ a: n in [0..350] | IsPrime(a) where a is 2^n+13 ] // Vincenzo Librandi, Nov 16 2010

Mathematica

a = Delete[Union[Flatten[Table[If [PrimeQ[2^n + 13] == True, 2^n + 13, 0], {n, 1, 400}]]], 1]

Formula

a(n) = 2^A102634(n) + 13. - R. J. Mathar, Feb 22 2009

Extensions

Definition corrected by Edwin Dyke (ed.dyke(AT)btinternet.com), Feb 19 2009