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A139999 Primes of the form 3x^2+440y^2. 2
3, 443, 467, 587, 683, 947, 1307, 1523, 1787, 1907, 2003, 2027, 2267, 2843, 2963, 3083, 3323, 3347, 3947, 4283, 4547, 4643, 5003, 5483, 5867, 5987, 6323, 6803, 7043, 7187, 7283, 7307, 7547, 7643, 7907, 8123, 8243, 8363, 8387, 8627, 8867 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Discriminant=-5280. 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

Except for 3, the primes are congruent to {203, 323, 443, 467, 587, 683, 707, 947, 1043, 1307} (mod 1320).

MATHEMATICA

QuadPrimes2[3, 0, 440, 10000] (* see A106856 *)

PROG

(MAGMA) [3] cat [p: p in PrimesUpTo(12000) | p mod 1320 in [203, 323, 443, 467, 587, 683, 707, 947, 1043, 1307]]; // Vincenzo Librandi, Aug 03 2012

CROSSREFS

Sequence in context: A086207 A326373 A092052 * A140870 A157601 A094454

Adjacent sequences:  A139996 A139997 A139998 * A140000 A140001 A140002

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 02 2008

STATUS

approved

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Last modified January 25 03:49 EST 2020. Contains 331241 sequences. (Running on oeis4.)