A142374 Primes congruent to 23 mod 47.

23, 211, 587, 1151, 1433, 1621, 1997, 2467, 2749, 2843, 3313, 3407, 3877, 4159, 4253, 4441, 4723, 4817, 5099, 5381, 5569, 5851, 6133, 6791, 7919, 8389, 10457, 10739, 11491, 11867, 12149, 12619, 12713, 13183, 13841, 14029, 14593, 14969, 15439, 16097, 16567

Offset

1,1

Links

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

Formula

a(n) ~ 46n log n. - Charles R Greathouse IV, Jul 03 2016

Mathematica

Select[Prime[Range[2000]], Mod[#, 47]==23&] (* Harvey P. Dale, Feb 05 2012 *)
Select[Prime[Range[2500]], MemberQ[{23}, Mod[#, 47]]&] (* Vincenzo Librandi, Aug 27 2012 *)

Prog

(Magma) [p: p in PrimesUpTo(18000) | p mod 47 eq 23]; // Vincenzo Librandi, Aug 27 2012
(PARI) is(n)=isprime(n) && n%47==23 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A327918 A327919 A165243 * A171342 A112747 A201831

Adjacent sequences: A142371 A142372 A142373 * A142375 A142376 A142377

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved