%I #11 Sep 08 2022 08:46:11
%S 3,6,23,24,36,54,57,62,63,78,113,123,134,138,140,149,158,167,173,174,
%T 189,194,198,200,204,228,240,255,260,267,297,329,341,353,375,396,399,
%U 413,425,435,444,473,480,482,491,495,503,515,516,519,534,546,548,554,576
%N Numbers n such that n^2 + n + 712329866165608771 is prime.
%C For comment see A256312.
%H R. A. Mollin, <a href="http://www.jstor.org/stable/2975080">Prime-producing quadratics</a>, Amer. Math. Monthly 104 (1997),page 542.
%t Select[Range[700], PrimeQ[#^2 + # + 712329866165608771] &]
%o (Magma) [n: n in [0..100] | IsPrime(n^2+n+712329866165608771)];
%o (PARI) is(n)=isprime(n^2+n+712329866165608771) \\ _Charles R Greathouse IV_, Jun 13 2017
%Y Cf. A256312 (associated primes).
%K nonn,easy
%O 1,1
%A _Vincenzo Librandi_, Apr 07 2015