A142376 Primes congruent to 25 mod 47.

307, 401, 683, 1153, 1811, 1999, 2281, 2657, 2939, 3221, 3691, 4349, 5101, 5477, 6229, 6323, 6793, 7451, 7639, 8297, 8861, 9049, 9613, 10177, 10271, 10459, 11117, 11399, 11587, 11681, 12433, 12527, 12809, 14407, 14783, 15629, 15817, 16193, 16381, 17321

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[{25}, Mod[#, 47]]&] (* Vincenzo Librandi, Aug 27 2012
Select[Range[25, 18000, 47], PrimeQ] (* Harvey P. Dale, Jun 13 2017 *)

Prog

(Magma) [p: p in PrimesUpTo(18000) | p mod 47 eq 25]; // Vincenzo Librandi, Aug 27 2012
(PARI) is(n)=isprime(n) && n%47==25 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A220475 A282594 A050201 * A261289 A142255 A309101

Adjacent sequences: A142373 A142374 A142375 * A142377 A142378 A142379

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved