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Primes p such that 17 is not a square mod p.
4

%I #15 Aug 08 2024 06:25:32

%S 3,5,7,11,23,29,31,37,41,61,71,73,79,97,107,109,113,131,139,163,167,

%T 173,181,193,197,199,211,227,233,241,269,277,283,311,313,317,337,347,

%U 367,379,397,401,419,431,439,449

%N Primes p such that 17 is not a square mod p.

%C Inert rational primes in the field Q(sqrt(17)). - _N. J. A. Sloane_, Dec 26 2017

%C Also, primes p that are not squares mod 17 (from the quadratic reciprocity law). - _Lekraj Beedassy_, Jul 13 2004

%H Vincenzo Librandi, <a href="/A038890/b038890.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime@Range[120], JacobiSymbol[17, #] == -1 &] (* _Vincenzo Librandi_, Sep 08 2012 *)

%K nonn

%O 1,1

%A _N. J. A. Sloane_.

%E Offset changed from 0 to 1 by _Vincenzo Librandi_, Sep 08 2012