A121226 Positive integers n for which n^2 + n + 1712329866165608771 is prime.

3, 14, 19, 21, 27, 38, 39, 57, 59, 63, 64, 69, 70, 82, 86, 88, 93, 96, 102, 103, 110, 115, 119, 120, 124, 130, 138, 140, 146, 148, 152, 155, 158, 159, 160, 161, 163, 167, 168, 175, 177, 178, 179, 187, 193, 195, 196, 197, 198, 202, 213, 215, 217, 229, 230, 234, 235, 240, 245, 248, 253, 254, 263, 265, 267, 275, 280, 282, 283, 285, 292, 294, 297, 302, 305, 307, 311, 312, 315, 317, 321, 324, 325, 329, 333

Offset

1,1

Links

Robert Israel, Table of n, a(n) for n = 1..10000

R. A. Mollin, Prime-Producing Quadratics, The American Mathematical Monthly, Vol. 104, No. 6 (Jun. - Jul., 1997), pp. 529-544.

Maple

select(n -> isprime(n^2 + n + 1712329866165608771), [$1..10^4]); # Robert Israel, Jan 05 2015

Mathematica

Select[Range[350], PrimeQ[#^2+#+1712329866165608771]&] (* Harvey P. Dale, Sep 05 2022 *)

Crossrefs

Sequence in context: A134767 A022125 A121459 * A063633 A108933 A271384

Adjacent sequences: A121223 A121224 A121225 * A121227 A121228 A121229

Keyword

nonn

Author

G. L. Honaker, Jr., Aug 20 2006

Status

approved