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A167804 Numbers with primitive root -8. 19
5, 23, 25, 29, 47, 53, 71, 101, 125, 149, 167, 173, 191, 197, 239, 263, 269, 293, 311, 317, 359, 383, 389, 461, 479, 503, 509, 529, 557, 599, 625, 647, 653, 677, 701, 719, 743, 773, 797, 821, 839, 841, 863, 887, 941, 983, 1031, 1061, 1109, 1151, 1223, 1229 (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=-8; Select[Range[2, 2000], MultiplicativeOrder[pr, # ] == EulerPhi[ # ] &]

CROSSREFS

Cf. A105880 (primes with primitive root -8)

Sequence in context: A102723 A136146 A289278 * A196243 A018527 A084411

Adjacent sequences:  A167801 A167802 A167803 * A167805 A167806 A167807

KEYWORD

nonn

AUTHOR

T. D. Noe, Nov 12 2009

STATUS

approved

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Last modified July 18 15:37 EDT 2019. Contains 325144 sequences. (Running on oeis4.)