A038941 Primes p such that 61 is a square mod p.

3, 5, 13, 19, 41, 47, 61, 73, 83, 97, 103, 107, 109, 113, 127, 131, 137, 149, 163, 167, 179, 197, 199, 229, 239, 241, 257, 263, 269, 271, 283, 293, 317, 347, 353, 367, 379, 431, 439, 443, 449, 461, 463, 479, 487

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn

Comments

Also, primes p that are squares mod 61 (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[61, #] == -1 &] (* Vincenzo Librandi, Sep 08 2012 *)