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%I #14 Apr 01 2014 03:00:46
%S 2,17,19,37,43,47,59,61,83,107,109,127,137,149,157,167,173,179,181,
%T 191,193,197,211,227,257,263,269,271,281,313,317,347,383,401,443,449,
%U 479,541,547,557,571,587,599,601,613,617,619,643,677,751,787,797,811,821,829,839
%N Primes with primitive root 91.
%H Vincenzo Librandi, <a href="/A019413/b019413.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=91; Select[Prime[Range[200]], MultiplicativeOrder[pr, # ] == #-1 &]
%K nonn
%O 1,1
%A _David W. Wilson_
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