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A139919 Primes of the form 17x^2+6xy+17y^2. 1
17, 73, 97, 257, 313, 353, 433, 577, 593, 857, 937, 1097, 1153, 1193, 1217, 1433, 1553, 1657, 1697, 1753, 1777, 1993, 2113, 2273, 2393, 2593, 2617, 2777, 2833, 2897, 2953, 3433, 3457, 3617, 3673, 3793, 4073, 4177, 4217, 4273, 4297, 4457 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Discriminant=-1120. 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 {17, 33, 73, 97, 153, 257} (mod 280).

MATHEMATICA

Union[QuadPrimes2[17, 6, 17, 10000], QuadPrimes2[17, -6, 17, 10000]] (* see A106856 *)

PROG

(MAGMA) [ p: p in PrimesUpTo(6000) | p mod 280 in [17, 33, 73, 97, 153, 257]]; // Vincenzo Librandi, Aug 01 2012

CROSSREFS

Sequence in context: A245042 A144245 A307718 * A043194 A043974 A141972

Adjacent sequences:  A139916 A139917 A139918 * A139920 A139921 A139922

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 02 2008

STATUS

approved

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Last modified December 15 04:23 EST 2019. Contains 329991 sequences. (Running on oeis4.)