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A107210 Primes of the form 3x^2+31y^2. 2
3, 31, 43, 79, 127, 139, 151, 199, 223, 271, 331, 367, 463, 487, 499, 523, 571, 619, 631, 643, 739, 787, 823, 859, 883, 967, 991, 1171, 1231, 1447, 1483, 1531, 1543, 1567, 1579, 1627, 1747, 1759, 1951, 1987, 1999, 2011, 2083, 2131, 2287, 2311 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Discriminant=-372. See A107132 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 {3, 31, 43, 55, 79, 91, 115, 127, 139, 151, 199, 223, 247, 259, 271, 331, 367} (mod 372). - T. D. Noe, May 02 2008

MATHEMATICA

QuadPrimes2[3, 0, 31, 10000] (* see A106856 *)

PROG

(MAGMA) [ p: p in PrimesUpTo(4000) | p mod 372 in {3, 31, 43, 55, 79, 91, 115, 127, 139, 151, 199, 223, 247, 259, 271, 331, 367}]; // Vincenzo Librandi, Jul 28 2012

CROSSREFS

Cf. A139827.

Sequence in context: A068331 A177104 A078330 * A119739 A163579 A238663

Adjacent sequences:  A107207 A107208 A107209 * A107211 A107212 A107213

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 13 2005

STATUS

approved

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Last modified December 19 12:22 EST 2014. Contains 252224 sequences.