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%I #14 Mar 31 2014 13:46:19
%S 2,3,5,29,43,47,59,79,103,107,149,151,157,181,193,199,223,229,233,239,
%T 251,257,263,269,277,313,347,353,359,367,373,383,397,419,431,457,467,
%U 509,521,541,547,557,569,571,577,587,647,659,691,719,727,739,743,773,797,809
%N Primes with primitive root 77.
%H Vincenzo Librandi, <a href="/A019400/b019400.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=77; Select[Prime[Range[200]], MultiplicativeOrder[pr, # ] == #-1 &]
%K nonn
%O 1,1
%A _David W. Wilson_
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