A142009 Primes congruent to 5 mod 31.

5, 67, 191, 439, 563, 811, 997, 1307, 1493, 1741, 2113, 2237, 2423, 2609, 2671, 2857, 3167, 3229, 3539, 3911, 4159, 4283, 4903, 5399, 5647, 6143, 6329, 6577, 6701, 6763, 6949, 7321, 7507, 7817, 7879, 8623, 8747, 8933, 9181, 9491, 9677, 9739, 10111, 10607

Offset

1,1

Links

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

Formula

a(n) ~ 30n log n. - Charles R Greathouse IV, Jul 03 2016

Mathematica

Select[Prime[Range[1300]], Mod[#, 31]==5&]  (* Harvey P. Dale, Mar 30 2011 *)

Prog

(Magma) [p: p in PrimesUpTo(12000) | p mod 31 eq 5 ]; // Vincenzo Librandi, Aug 17 2012
(PARI) is(n)=isprime(n) && n%31==5 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A059852 A057171 A185230 * A226412 A226343 A067393

Adjacent sequences: A142006 A142007 A142008 * A142010 A142011 A142012

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved