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Primes p such that 26 is not a square mod p.
2

%I #6 Sep 09 2012 02:05:09

%S 3,7,29,31,41,43,47,53,61,71,73,89,97,101,107,131,137,139,151,157,167,

%T 173,179,181,193,211,223,239,241,251,269,271,277,281,283,347,353,359,

%U 373,383,389,401,409,419,431,443

%N Primes p such that 26 is not a square mod p.

%H Vincenzo Librandi, <a href="/A038900/b038900.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime@Range[120], JacobiSymbol[26, #] == -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