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A139912 Primes of the form 14x^2+14xy+23y^2. 1
23, 107, 179, 191, 263, 347, 443, 491, 599, 659, 911, 1031, 1187, 1283, 1439, 1499, 1583, 1667, 1871, 2003, 2027, 2207, 2339, 2447, 2531, 2591, 2843, 2963, 3119, 3299, 3371, 3467, 3539, 3623, 3719, 3767, 3851, 4211, 4391, 4463, 4523, 4547 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Discriminant=-1092. See A139827 for more information.

LINKS

Vincenzo Librandi and Ray Chandler, Table of n, a(n) for n = 1..10000 [First 1000 terms from Vincenzo Librandi]

N. J. A. Sloane et al., Binary Quadratic Forms and OEIS (Index to related sequences, programs, references)

FORMULA

The primes are congruent to {23, 95, 107, 155, 179, 191, 263, 347, 407, 443, 491, 575, 599, 659, 779, 911, 935, 1031} (mod 1092).

MATHEMATICA

QuadPrimes2[14, -14, 23, 10000] (* see A106856 *)

PROG

(Magma) [ p: p in PrimesUpTo(6000) | p mod 1092 in [23, 95, 107, 155, 179, 191, 263, 347, 407, 443, 491, 575, 599, 659, 779, 911, 935, 1031]]; // Vincenzo Librandi, Aug 01 2012

CROSSREFS

Sequence in context: A231439 A180517 A142244 * A176928 A157607 A142272

Adjacent sequences: A139909 A139910 A139911 * A139913 A139914 A139915

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 02 2008

EXTENSIONS

Corrected and extended b-file - Ray Chandler, Jul 31 2014

STATUS

approved

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Last modified February 2 15:52 EST 2023. Contains 360022 sequences. (Running on oeis4.)