A142291 Primes congruent to 42 mod 43.

257, 601, 773, 859, 1031, 1117, 1289, 2063, 2579, 2837, 3181, 3697, 4127, 4643, 4729, 4987, 5417, 5503, 6277, 6449, 6793, 7309, 7481, 8513, 8599, 9029, 9631, 9803, 10061, 10663, 11093, 11351, 11437, 11867, 11953, 12211, 12641, 12899, 13759, 13931, 14447

Offset

1,1

Links

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

Formula

a(n) ~ 42n log n. - Charles R Greathouse IV, Jul 02 2016

Mathematica

Select[Prime[Range[5000]], MemberQ[{42}, Mod[#, 43]]&] (* Vincenzo Librandi; Aug 25 2012 *)
Select[Range[42, 15000, 43], PrimeQ] (* Harvey P. Dale, Sep 11 2019 *)

Prog

(Magma) [p: p in PrimesUpTo(18000) | p mod 43 eq 42 ]; // Vincenzo Librandi, Aug 25 2012
(PARI) is(n)=isprime(n) && n%43==42 \\ Charles R Greathouse IV, Jul 02 2016

Crossrefs

Cf. A000040.

Sequence in context: A100633 A007765 A250726 * A208177 A229855 A229856

Adjacent sequences: A142288 A142289 A142290 * A142292 A142293 A142294

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved