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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

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: A041696 A277977 A080187 * A069593 A086120 A129701

Adjacent sequences:  A142167 A142168 A142169 * A142171 A142172 A142173

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Jul 11 2008

STATUS

approved

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Last modified December 11 15:43 EST 2017. Contains 295905 sequences.