A038931 Primes p such that 53 is a square mod p.

7, 11, 13, 17, 29, 37, 43, 47, 53, 59, 89, 97, 107, 113, 131, 149, 163, 197, 199, 211, 223, 227, 229, 241, 269, 271, 281, 293, 307, 311, 317, 331, 347, 367, 409, 431, 433, 439, 449, 461, 467, 487, 521, 523, 541

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn

Comments

Also, primes p which are squares mod 53 (from the quadratic reciprocity law). - Lekraj Beedassy, Jul 13 2004

Links

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

Programs

Mathematica

Select[Prime[Range[100]], ! JacobiSymbol[53, #] == -1 &] (* Vincenzo Librandi, Sep 08 2012 *)

Extensions

Offset changed from 0 to 1 by Vincenzo Librandi, Sep 08 2012