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A105911 Primes for which -39 is a primitive root. 1
2, 7, 17, 23, 29, 37, 53, 67, 73, 97, 107, 109, 113, 151, 163, 173, 179, 229, 233, 241, 251, 257, 263, 269, 307, 311, 331, 347, 389, 397, 409, 419, 421, 443, 457, 467, 491, 503, 563, 569, 577, 641, 643, 647, 653, 659, 677, 701, 709, 719, 739, 787, 797, 809, 857, 877, 881 (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=-39; Select[Prime[Range[200]], MultiplicativeOrder[pr, # ] == #-1 &]

CROSSREFS

Sequence in context: A182575 A074884 A227144 * A038873 A141131 A049594

Adjacent sequences:  A105908 A105909 A105910 * A105912 A105913 A105914

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Apr 24 2005

STATUS

approved

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Last modified June 1 04:57 EDT 2020. Contains 334758 sequences. (Running on oeis4.)