A142623 Primes congruent to 31 mod 55.

31, 251, 691, 911, 1021, 1571, 1901, 2011, 2341, 2671, 3001, 3221, 3331, 3881, 4211, 4651, 4871, 5531, 5641, 5861, 6301, 6521, 6961, 7621, 7841, 7951, 8171, 8501, 8831, 8941, 9161, 9491, 9601, 9931, 10151, 11251, 11471, 11801, 12241, 12791, 13121, 13451

Offset

1,1

Links

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

Mathematica

Select[Prime[Range[2500]], MemberQ[{31}, Mod[#, 55]] &] (* Vincenzo Librandi, Aug 31 2012 *)
Select[Range[31, 14000, 55], PrimeQ] (* Harvey P. Dale, Dec 16 2017 *)

Prog

(Magma) [p: p in PrimesUpTo(16000) | p mod 55 eq 31]; // Vincenzo Librandi, Aug 31 2012

Crossrefs

Cf. A000040.

Sequence in context: A147963 A027846 A042872 * A089705 A180471 A125368

Adjacent sequences: A142620 A142621 A142622 * A142624 A142625 A142626

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved