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10 is a square mod p.
3

%I #11 Jan 26 2014 11:55:55

%S 2,3,5,13,31,37,41,43,53,67,71,79,83,89,107,151,157,163,173,191,197,

%T 199,227,239,241,271,277,281,283,293,307,311,317,347,359,373,397,401,

%U 409,431,439,443,449,467,479,521

%N 10 is a square mod p.

%C 2 and 5 together with primes congruent to +/- {1, 3, 9, 13} mod 40. - _Eric M. Schmidt_, Jan 25 2014

%H Vincenzo Librandi, <a href="/A038879/b038879.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime[Range[100]], JacobiSymbol[10, #] != -1 &] (* _Vincenzo Librandi_, Sep 07 2012 *)

%K nonn

%O 1,1

%A _N. J. A. Sloane_.