A104067 Primes of the form 2^k + 13.

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

Offset

1,1

Links

Table of n, a(n) for n=1..8.

Formula

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

Mathematica

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

Prog

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

Crossrefs

Sequence in context: A146870 A146744 A103304 * A274023 A146872 A146792

Adjacent sequences: A104064 A104065 A104066 * A104068 A104069 A104070

Keyword

nonn

Author

Roger L. Bagula, Mar 02 2005

Extensions

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

Status

approved