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A038927 Primes p such that 47 is a square mod p. 1
2, 11, 17, 19, 23, 31, 37, 43, 47, 53, 61, 67, 89, 97, 101, 107, 127, 139, 149, 151, 157, 163, 167, 173, 179, 197, 199, 211, 223, 227, 241, 269, 277, 311, 337, 353, 359, 367, 397, 401, 419, 443, 457, 463, 467, 499 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Also, only entries p=1 (mod 4) of the sequence are squares mod 47 (from the quadratic reciprocity law). - Lekraj Beedassy, Jul 21 2004

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

MATHEMATICA

Select[Prime[Range[100]], ! JacobiSymbol[47, #] == -1 &] (* Vincenzo Librandi, Sep 08 2012 *)

CROSSREFS

Sequence in context: A012253 A103336 A019402 * A105877 A309499 A173638

Adjacent sequences:  A038924 A038925 A038926 * A038928 A038929 A038930

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified February 27 03:50 EST 2020. Contains 332299 sequences. (Running on oeis4.)