A142393 Primes congruent to 42 mod 47.

89, 277, 653, 1123, 1217, 1499, 2063, 2251, 2909, 3191, 3943, 4507, 4789, 6011, 6199, 6481, 6763, 6857, 7703, 8737, 8831, 9677, 10429, 10711, 10993, 11087, 11369, 11839, 11933, 12497, 12967, 13249, 13907, 14753, 15787, 15881, 16069, 16633, 17291, 17573

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

Prog

(Magma) [p: p in PrimesUpTo(18000) | p mod 47 eq 42]; // Vincenzo Librandi, Aug 27 2012
(PARI) is(n)=isprime(n) && n%47==42 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A238681 A320909 A227519 * A142045 A142936 A142685

Adjacent sequences: A142390 A142391 A142392 * A142394 A142395 A142396

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved