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A139937 Primes of the form 5x^2+69y^2. 1
5, 89, 149, 281, 389, 401, 521, 569, 641, 701, 881, 941, 1049, 1109, 1229, 1601, 1709, 1721, 1901, 1949, 2069, 2081, 2549, 2609, 2621, 2729, 2909, 3041, 3089, 3329, 3449, 3461, 3701, 3881, 3929, 3989, 4001, 4229, 4289, 4421, 4481, 5021 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Discriminant=-1380. 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 {5, 89, 149, 221, 281, 329, 341, 389, 401, 521, 569, 641, 689, 701, 881, 941, 1049, 1109, 1121, 1169, 1229, 1241, 1349} (mod 1380).

MATHEMATICA

QuadPrimes2[5, 0, 69, 10000] (* see A106856 *)

PROG

(MAGMA) [ p: p in PrimesUpTo(6000) | p mod 1380 in [5, 89, 149, 221, 281, 329, 341, 389, 401, 521, 569, 641, 689, 701, 881, 941, 1049, 1109, 1121, 1169, 1229, 1241, 1349]]; // Vincenzo Librandi, Aug 02 2012

CROSSREFS

Sequence in context: A106971 A136618 A138700 * A059696 A072216 A176608

Adjacent sequences:  A139934 A139935 A139936 * A139938 A139939 A139940

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 02 2008

STATUS

approved

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Last modified August 8 19:29 EDT 2020. Contains 336298 sequences. (Running on oeis4.)