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A167796 Numbers with primitive root 8. 20
3, 5, 11, 25, 29, 53, 59, 83, 101, 107, 121, 125, 131, 149, 173, 179, 197, 227, 269, 293, 317, 347, 389, 419, 443, 461, 467, 491, 509, 557, 563, 587, 625, 653, 659, 677, 701, 773, 797, 821, 827, 841, 941, 947, 1019, 1061, 1091, 1109, 1187, 1229, 1259, 1277 (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. A019338 (primes with primitive root 8)

Sequence in context: A214873 A018116 A259643 * A261896 A285184 A018008

Adjacent sequences:  A167793 A167794 A167795 * A167797 A167798 A167799

KEYWORD

nonn

AUTHOR

T. D. Noe, Nov 12 2009

STATUS

approved

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Last modified August 26 05:42 EDT 2019. Contains 326329 sequences. (Running on oeis4.)