A142391 Primes congruent to 40 mod 47.

181, 463, 557, 839, 1873, 2437, 2531, 2719, 3001, 3659, 3847, 4129, 4787, 5351, 5821, 6197, 6761, 6949, 7043, 7607, 8171, 8641, 8923, 9769, 10333, 10427, 10709, 11273, 11743, 12119, 12401, 12589, 13999, 14281, 14563, 14657, 14939, 15973, 16067, 16349, 16631

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[{40}, Mod[#, 47]]&] (* Vincenzo Librandi, Aug 27 2012 *)
Select[Range[40, 17000, 47], PrimeQ] (* Harvey P. Dale, Dec 01 2022 *)

Prog

(Magma) [p: p in PrimesUpTo(18000) | p mod 47 eq 40]; // Vincenzo Librandi, Aug 27 2012
(PARI) is(n)=isprime(n) && n%47==40 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A063360 A217499 A113156 * A142552 A211553 A253821

Adjacent sequences: A142388 A142389 A142390 * A142392 A142393 A142394

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved