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A105879 Primes for which -7 is a primitive root. 2
2, 3, 5, 13, 17, 31, 41, 47, 59, 61, 83, 89, 97, 101, 103, 131, 139, 167, 173, 199, 227, 229, 241, 251, 257, 269, 271, 283, 293, 307, 349, 383, 397, 433, 461, 467, 479, 503, 509, 521, 523, 563, 577, 587, 593, 601, 619, 643, 647, 677, 691, 719, 727, 733, 761, 773, 787, 797 (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=-7; Select[Prime[Range[200]], MultiplicativeOrder[pr, # ] == #-1 &]

CROSSREFS

Sequence in context: A231481 A284669 A154554 * A066111 A065820 A163268

Adjacent sequences:  A105876 A105877 A105878 * A105880 A105881 A105882

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Apr 24 2005

STATUS

approved

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Last modified April 3 23:48 EDT 2020. Contains 333207 sequences. (Running on oeis4.)