%I #9 Mar 31 2024 15:07:57
%S 2,3,7,11,19,23,43,47,59,79,83,103,107,131,139,151,167,179,223,227,
%T 239,263,283,307,311,331,347,359,383,419,431,439,443,463,467,479,491,
%U 499,503,523,547,563,571,587,599,607,619,647,659,683,719,727,743,751,787,811,839
%N Primes for which -25 is a primitive root.
%H Vincenzo Librandi, <a href="/A105897/b105897.txt">Table of n, a(n) for n = 1..1000</a>
%H <a href="/index/Pri#primes_root">Index entries for primes by primitive root</a>
%t pr=-25; Select[Prime[Range[200]], MultiplicativeOrder[pr, # ] == #-1 &]
%K nonn
%O 1,1
%A _N. J. A. Sloane_, Apr 24 2005