A273808 - OEIS

%I #7 Sep 08 2022 08:46:17

%S 467,479,719,4294967759,340282366920938463463374607431768211919

%N Primes of the form 2^(2^n) + 463.

%C Terms given correspond to n = 1, 2, 3, 5 and 7.

%C Next term >= 2^2^27 + 463. - _Charles R Greathouse IV_, Jun 07 2016

%t Select[Table[2^(2^n) + 463, {n, 0, 15}], PrimeQ]

%o (Magma) [a: n in [0..16] | IsPrime(a) where a is 2^(2^n)+463];

%o (PARI) for(n=1,7, if(ispseudoprime(t=2^2^n+463), print1(t", "))) \\ _Charles R Greathouse IV_, Jun 07 2016

%Y Cf. similar sequences listed in A273547.

%K nonn

%O 1,1

%A _Vincenzo Librandi_, Jun 02 2016