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Primes p such that 86 is a square mod p.
1

%I #7 Sep 08 2012 06:19:49

%S 2,5,7,11,17,29,37,41,43,59,61,67,71,83,97,107,139,149,151,157,191,

%T 193,199,223,251,263,277,281,283,307,337,349,353,373,379,383,389,401,

%U 421,443,463,503,547,563,569,607

%N Primes p such that 86 is a square mod p.

%H Vincenzo Librandi, <a href="/A038973/b038973.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime[Range[120]], ! JacobiSymbol[86, #] == -1 &] (* _Vincenzo Librandi_, Sep 08 2012 *)

%K nonn

%O 1,1

%A _N. J. A. Sloane_.