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A105877 Primes for which -5 is a primitive root. 2
2, 11, 17, 19, 37, 53, 59, 73, 79, 97, 113, 131, 137, 139, 151, 157, 173, 179, 193, 197, 233, 239, 257, 277, 293, 311, 317, 331, 353, 359, 373, 397, 419, 431, 433, 439, 479, 491, 499, 557, 571, 577, 593, 599, 613, 617, 619, 653, 659, 673, 677, 719, 751, 757, 773, 797, 811 (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=-5; Select[Prime[Range[200]], MultiplicativeOrder[pr, # ] == #-1 &]

CROSSREFS

Sequence in context: A103336 A019402 A038927 * A173638 A018420 A133410

Adjacent sequences:  A105874 A105875 A105876 * A105878 A105879 A105880

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Apr 24 2005

STATUS

approved

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Last modified November 22 16:20 EST 2014. Contains 249807 sequences.