A273806 Primes of the form 2^(2^n) + 357.

359, 373, 613, 4294967653, 115792089237316195423570985008687907853269984665640564039457584007913129640293

Offset

1,1

Comments

Terms given correspond to n = 0, 2, 3, 5 and 8.

Next term >= 2^2^24 + 357. - Charles R Greathouse IV, Jun 07 2016

Links

Table of n, a(n) for n=1..5.

Mathematica

Select[Table[2^(2^n) + 357, {n, 0, 15}], PrimeQ]

Prog

(Magma) [a: n in [0..16] | IsPrime(a) where a is 2^(2^n)+357];
(PARI) for(n=0, 8, if(ispseudoprime(t=2^2^n+357), print1(t", "))) \\ Charles R Greathouse IV, Jun 07 2016

Crossrefs

Cf. similar sequences listed in A273547.

Sequence in context: A236159 A280403 A145533 * A292618 A186461 A344285

Adjacent sequences: A273803 A273804 A273805 * A273807 A273808 A273809

Keyword

nonn

Author

Vincenzo Librandi, Jun 02 2016

Status

approved