A141868 Primes congruent to 1 mod 19.

191, 229, 419, 457, 571, 647, 761, 1103, 1217, 1483, 1559, 1597, 1787, 1901, 2053, 2129, 2243, 2281, 2357, 2699, 2851, 2927, 3041, 3079, 3307, 3877, 4219, 4409, 4447, 4523, 4561, 4637, 4751, 4789, 4903, 5701, 6043, 6271, 6689, 6803, 6841, 6917, 7069, 7297

Offset

1,1

Links

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

Formula

a(n) ~ 18n log n. - Charles R Greathouse IV, Jul 02 2016

Mathematica

Select[Prime[Range[2000]], MemberQ[{1}, Mod[#, 19]]&] (* Vincenzo Librandi, Aug 15 2012 *)

Prog

(Magma) [p: p in PrimesUpTo(8000) | p mod 19 eq 1 ]; // Vincenzo Librandi, Aug 15 2012
(PARI) is(n)=isprime(n) && n%19==1 \\ Charles R Greathouse IV, Jul 02 2016

Crossrefs

Sequence in context: A160784 A139650 A139977 * A059244 A136068 A045141

Adjacent sequences: A141865 A141866 A141867 * A141869 A141870 A141871

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved