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A142170
Primes congruent to 19 mod 39.
1
19, 97, 331, 409, 487, 643, 877, 1033, 1423, 1579, 1657, 2203, 2281, 2437, 2593, 2671, 2749, 3061, 3217, 3373, 3529, 3607, 3919, 4153, 4231, 4621, 4933, 5011, 5167, 5323, 5479, 5557, 5791, 5869, 6337, 6571, 6883, 6961, 7039, 7351, 7507, 7741, 8053, 8209
OFFSET
1,1
LINKS
FORMULA
a(n) ~ 24n log n. - Charles R Greathouse IV, Jul 03 2016
MATHEMATICA
Select[Prime[Range[1100]], Mod[#, 39]==19&] (* Harvey P. Dale, Mar 30 2011 *)
Select[Prime[Range[3000]], MemberQ[{19}, Mod[#, 39]]&] (* Vincenzo Librandi, Aug 20 2012 *)
PROG
(Magma) [p: p in PrimesUpTo(9000) | p mod 39 eq 19 ]; // Vincenzo Librandi, Aug 20 2012
(PARI) is(n)=isprime(n) && n%39==19 \\ Charles R Greathouse IV, Jul 03 2016
CROSSREFS
Cf. A000040.
Sequence in context: A277977 A080187 A362301 * A069593 A299733 A086120
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved