A142390 Primes congruent to 39 mod 47.

227, 509, 1543, 1637, 2389, 2671, 2953, 3329, 3517, 4363, 4457, 5021, 5209, 5303, 5867, 6337, 6619, 7559, 7841, 8123, 8311, 8969, 9157, 9439, 9533, 9721, 10567, 11131, 11789, 12071, 12541, 12823, 12917, 13669, 13763, 14327, 14797, 14891, 15173, 15361, 15643

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[{39}, Mod[#, 47]] &] (* Vincenzo Librandi, Aug 27 2012 *)
Select[Range[39, 16000, 47], PrimeQ] (* Harvey P. Dale, Oct 14 2021 *)

Prog

(Magma) [p: p in PrimesUpTo(18000) | p mod 47 eq 39]; // Vincenzo Librandi, Aug 27 2012
(PARI) is(n)=isprime(n) && n%47==39 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A142842 A142545 A088788 * A142219 A176012 A031693

Adjacent sequences: A142387 A142388 A142389 * A142391 A142392 A142393

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved