A191065 - OEIS

A191065

Primes that are not squares mod 23.

5, 7, 11, 17, 19, 37, 43, 53, 61, 67, 79, 83, 89, 97, 103, 107, 109, 113, 137, 149, 157, 181, 191, 199, 227, 229, 241, 251, 263, 281, 283, 293, 313, 337, 359, 367, 373, 379, 383, 389, 401, 419, 421, 431, 433, 457, 467, 479, 503, 521, 523, 557, 563, 569, 571

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Inert rational primes in the field Q(sqrt(-23)). - N. J. A. Sloane, Dec 26 2017

It appears that this is the same as primes p such that A000594(p) = RamanujanTau(p) == 0 (mod 23). - Ray Chandler, Dec 01 2016

LINKS

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

Index to sequences related to decomposition of primes in quadratic fields

MATHEMATICA

Select[Prime[Range[200]], JacobiSymbol[#, 23]==-1&]

PROG