|
%I #9 Sep 08 2022 08:44:53
%S 3,11,17,23,31,53,67,79,83,89,97,101,103,107,113,139,149,157,167,173,
%T 181,191,193,197,199,211,229,239,241,257,269,281,293,307,311,313,317,
%U 349,353,373,379,383,397,401,409
%N Primes p such that 74 is not a square mod p.
%H Vincenzo Librandi, <a href="/A038960/b038960.txt">Table of n, a(n) for n = 1..1000</a>
%t Select[Prime@Range[2120], JacobiSymbol[74, #] == - 1 &] (* _Vincenzo Librandi_, Sep 09 2012 *)
%o (Magma) [ p: p in PrimesUpTo(409) | not IsSquare(R! 74) where R:= ResidueClassRing(p) ]; // _Vincenzo Librandi_, Sep 10 2012
%K nonn,easy
%O 1,1
%A _N. J. A. Sloane_.
%E Offset changed from 0 to 1 by _Vincenzo Librandi_, Sep 09 2012
|
