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A141868
Primes congruent to 1 mod 19.
4
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
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
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved