A038966 - OEIS

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A038966

Primes p such that 79 is not a square mod p.

11, 17, 19, 23, 29, 31, 37, 41, 53, 61, 67, 83, 109, 113, 131, 137, 149, 151, 157, 163, 167, 173, 179, 193, 197, 223, 229, 233, 239, 263, 283, 293, 347, 349, 353, 367, 373, 383, 401, 409, 431, 439, 449, 461, 467

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OFFSET

1,1

COMMENTS

Also, only entries p=1 (mod 4) of the sequence are not squares mod 79 (from the quadratic reciprocity law). - Lekraj Beedassy, Jul 21 2004

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

MATHEMATICA

Select[Prime@Range[120], JacobiSymbol[79, #] == - 1 &] (* Vincenzo Librandi, Sep 09 2012 *)

PROG

(Magma) [ p: p in PrimesUpTo(467) | not IsSquare(R! 79) where R:= ResidueClassRing(p) ]; // Vincenzo Librandi, Sep 10 2012

CROSSREFS