A142382 Primes congruent to 31 mod 47.

31, 313, 877, 971, 1723, 2099, 2287, 2381, 2663, 2851, 3697, 4073, 4261, 4637, 4919, 5107, 5483, 5953, 6047, 6329, 7457, 7927, 8209, 8867, 9337, 9431, 9619, 9901, 10559, 11311, 11593, 11969, 12157, 12251, 12721, 13003, 13567, 15259, 15541, 15823, 16481

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[2500]], MemberQ[{31}, Mod[#, 47]] &] (* Vincenzo Librandi, Aug 27 2012 *)

Prog

(Magma) [p: p in PrimesUpTo(18000) | p mod 47 eq 31]; // Vincenzo Librandi, Aug 27 2012
(PARI) is(n)=isprime(n) && n%47==31 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A126552 A068813 A221306 * A137318 A182025 A221189

Adjacent sequences: A142379 A142380 A142381 * A142383 A142384 A142385

Keyword

nonn,easy,changed

Author

N. J. A. Sloane, Jul 11 2008

Status

approved