A273804 Primes of the form 2^(2^n) + 301.

317, 557, 65837, 4294967597, 115792089237316195423570985008687907853269984665640564039457584007913129640237

Offset: 1

Author

Vincenzo Librandi, Jun 02 2016

Keywords

• nonn

Comments

Terms given correspond to n = 2, 3, 4, 5 and 8.

Next term >= 2^2^23 + 301. - Charles R Greathouse IV, Jun 07 2016

Crossrefs

Cf. similar sequences listed in A273547.

Programs

Magma

[a: n in [0..16] | IsPrime(a) where a is 2^(2^n)+301];

Mathematica

Select[Table[2^(2^n) + 301, {n, 0, 16}], PrimeQ]

PARI

for(n=1,20, if(ispseudoprime(t=2^2^n+301), print1(t", "))) \\ Charles R Greathouse IV, Jun 07 2016