A256674 Numbers n such that n^2 + n + 712329866165608771 is prime.

3, 6, 23, 24, 36, 54, 57, 62, 63, 78, 113, 123, 134, 138, 140, 149, 158, 167, 173, 174, 189, 194, 198, 200, 204, 228, 240, 255, 260, 267, 297, 329, 341, 353, 375, 396, 399, 413, 425, 435, 444, 473, 480, 482, 491, 495, 503, 515, 516, 519, 534, 546, 548, 554, 576

Offset

1,1

Comments

For comment see A256312.

Links

Table of n, a(n) for n=1..55.

R. A. Mollin, Prime-producing quadratics, Amer. Math. Monthly 104 (1997),page 542.

Mathematica

Select[Range[700], PrimeQ[#^2 + # + 712329866165608771] &]

Prog

(Magma) [n: n in [0..100] | IsPrime(n^2+n+712329866165608771)];
(PARI) is(n)=isprime(n^2+n+712329866165608771) \\ Charles R Greathouse IV, Jun 13 2017

Crossrefs

Cf. A256312 (associated primes).

Sequence in context: A366483 A117850 A090910 * A176424 A341549 A151443

Adjacent sequences: A256671 A256672 A256673 * A256675 A256676 A256677

Keyword

nonn,easy

Author

Vincenzo Librandi, Apr 07 2015

Status

approved