A019372 - OEIS

%I #15 Mar 31 2014 05:51:52

%S 2,3,5,7,29,41,59,71,73,79,83,109,113,137,181,191,193,229,233,239,257,

%T 263,283,293,307,313,317,347,373,379,383,389,409,433,449,461,479,487,

%U 491,509,523,557,569,593,641,643,647,673,677,683,719,797,809,821,823,829,857

%N Primes with primitive root 47.

%H Vincenzo Librandi, <a href="/A019372/b019372.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=47; Select[Prime[Range[200]], MultiplicativeOrder[pr, # ] == #-1 &]

%K nonn

%O 1,1

%A _David W. Wilson_