A141973 Primes congruent to 19 mod 28.

19, 47, 103, 131, 271, 383, 439, 467, 523, 607, 691, 719, 859, 887, 971, 1223, 1279, 1307, 1447, 1531, 1559, 1699, 1783, 1811, 1867, 1951, 1979, 2063, 2203, 2287, 2371, 2399, 2539, 2707, 2791, 2819, 2903, 3323, 3407, 3463, 3491, 3547, 3631, 3659, 3911, 3967

Offset

1,1

Links

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

Formula

a(n) ~ 12n log n. - Charles R Greathouse IV, Jul 03 2016

Mathematica

Select[Prime[Range[1500]], MemberQ[{19}, Mod[#, 28]]&] (* Vincenzo Librandi, Aug 17 2012 *)
Select[Range[19, 4000, 28], PrimeQ] (* Harvey P. Dale, Mar 05 2023 *)

Prog

(Magma) [p: p in PrimesUpTo(5000) | p mod 28 eq 19 ]; // Vincenzo Librandi, Aug 17 2012
(PARI) is(n)=isprime(n) && n%28==19 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A068474 A201314 A289728 * A165672 A136686 A130413

Adjacent sequences: A141970 A141971 A141972 * A141974 A141975 A141976

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved