A038890 Primes p such that 17 is not a square mod p.

3, 5, 7, 11, 23, 29, 31, 37, 41, 61, 71, 73, 79, 97, 107, 109, 113, 131, 139, 163, 167, 173, 181, 193, 197, 199, 211, 227, 233, 241, 269, 277, 283, 311, 313, 317, 337, 347, 367, 379, 397, 401, 419, 431, 439, 449

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn

Comments

Inert rational primes in the field Q(sqrt(17)). - N. J. A. Sloane, Dec 26 2017

Also, primes p that are not squares mod 17 (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[120], JacobiSymbol[17, #] == -1 &] (* Vincenzo Librandi, Sep 08 2012 *)

Extensions

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