A142007 Primes congruent to 3 mod 31.

3, 127, 251, 313, 499, 809, 1181, 1367, 1429, 1553, 1801, 1987, 2111, 2297, 2731, 2917, 3041, 3413, 3847, 4157, 4219, 4591, 5087, 5273, 5521, 6079, 6203, 6389, 6451, 6637, 6761, 6823, 6947, 7691, 7753, 7877, 8311, 8807, 9241, 9551, 9613, 9923, 10357, 10667

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[Range[3, 20000, 31], PrimeQ] (* Vladimir Joseph Stephan Orlovsky, Apr 07 2011 *)

Prog

(Magma) [p: p in PrimesUpTo(11000) | p mod 31 eq 3]; // Vincenzo Librandi, Aug 06 2012
(PARI) is(n)=isprime(n) && n%31==3 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A142005, A142006.

Sequence in context: A133122 A139936 A221637 * A339084 A071151 A041867

Adjacent sequences: A142004 A142005 A142006 * A142008 A142009 A142010

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved