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 A019367 Primes with primitive root 42. 2
 5, 23, 31, 37, 59, 71, 73, 83, 101, 109, 137, 163, 173, 191, 223, 227, 233, 239, 241, 251, 263, 269, 271, 281, 293, 331, 359, 367, 373, 379, 401, 409, 419, 431, 449, 461, 467, 499, 509, 563, 569, 587, 599, 601, 613, 617, 677, 727, 739, 757, 769, 773, 797, 809, 863, 877 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 MATHEMATICA pr=42; Select[Prime[Range[200]], MultiplicativeOrder[pr, # ] == #-1 &] Join[{5, 23, 31, 37}, Select[Prime[Range[200]], MemberQ[ PrimitiveRootList[ #], 42]&]] (* Harvey P. Dale, Nov 15 2014 *) CROSSREFS Sequence in context: A105880 A163587 A038922 * A065867 A071199 A082283 Adjacent sequences:  A019364 A019365 A019366 * A019368 A019369 A019370 KEYWORD nonn AUTHOR STATUS approved

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Last modified January 27 08:31 EST 2020. Contains 331293 sequences. (Running on oeis4.)