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%I #14 Mar 31 2014 04:07:58
%S 3,7,29,41,43,47,53,61,73,89,97,101,107,131,137,139,157,167,173,179,
%T 193,239,251,269,271,281,283,347,353,359,373,383,389,409,419,443,449,
%U 457,463,467,479,491,563,593,617,631,653,659,701,743,761,797,829,839,863,883,929
%N Primes with primitive root 26.
%H Vincenzo Librandi, <a href="/A019352/b019352.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=26; Select[Prime[Range[200]], MultiplicativeOrder[pr, # ] == #-1 &]
%K nonn
%O 1,1
%A _David W. Wilson_