A141913 Primes congruent to 9 mod 23.

101, 193, 239, 331, 607, 653, 883, 929, 1021, 1297, 1481, 1619, 1987, 2309, 2447, 2539, 2677, 2861, 2953, 2999, 3137, 3229, 3413, 3643, 3919, 4057, 4241, 4517, 4793, 4931, 5023, 5437, 5483, 5851, 5897, 6173, 6311, 6449, 6679, 6863, 7001, 7369, 7507, 7691

Offset

1,1

Links

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

Formula

a(n) ~ 22n log n. - Charles R Greathouse IV, Jul 03 2016

Mathematica

Select[Range[9, 10000, 23], PrimeQ] (* Vladimir Joseph Stephan Orlovsky, Apr 05 2011 *)
Select[Prime[Range[1000]], Mod[#, 23]==9&] (* Harvey P. Dale, Dec 14 2020 *)

Prog

(Magma) [p: p in PrimesUpTo(8000) | p mod 23 eq 9 ]; // Vincenzo Librandi, Aug 16 2012
(PARI) is(n)=isprime(n) && n%23==9 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040, A040984, A141908, A100201.

Sequence in context: A238671 A269575 A177032 * A100775 A044333 A044714

Adjacent sequences: A141910 A141911 A141912 * A141914 A141915 A141916

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved