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A105903 Primes for which -31 is a primitive root. 1
2, 3, 11, 17, 23, 29, 43, 53, 61, 73, 79, 83, 89, 127, 137, 139, 151, 167, 179, 197, 199, 223, 229, 239, 241, 251, 263, 269, 277, 313, 337, 347, 353, 367, 383, 389, 401, 433, 449, 457, 461, 463, 487, 491, 509, 523, 557, 569, 587, 631, 643, 647, 673, 677, 709, 719, 739, 743 (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=-31; Select[Prime[Range[200]], MultiplicativeOrder[pr, # ] == #-1 &]

CROSSREFS

Sequence in context: A189483 A164952 A157977 * A045338 A038907 A019417

Adjacent sequences:  A105900 A105901 A105902 * A105904 A105905 A105906

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Apr 24 2005

STATUS

approved

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Last modified December 22 04:14 EST 2014. Contains 252326 sequences.