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%I #14 Mar 31 2014 05:52:26
%S 2,5,11,17,23,37,47,67,83,97,109,127,131,137,149,181,191,193,197,211,
%T 223,233,239,251,263,311,347,353,359,373,389,409,419,421,433,439,443,
%U 467,479,487,491,503,523,547,557,587,593,617,647,653,701,719,751,761,787,809,811
%N Primes with primitive root 57.
%H Vincenzo Librandi, <a href="/A019381/b019381.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=57; Select[Prime[Range[200]], MultiplicativeOrder[pr, # ] == #-1 &]
%K nonn
%O 1,1
%A _David W. Wilson_
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