A142198 Primes congruent to 39 mod 40.

79, 199, 239, 359, 439, 479, 599, 719, 839, 919, 1039, 1279, 1319, 1399, 1439, 1559, 1759, 1879, 1999, 2039, 2239, 2399, 2719, 2879, 2999, 3079, 3119, 3319, 3359, 3559, 3719, 3919, 4079, 4159, 4519, 4639, 4679, 4759, 4799, 4919, 4999, 5039, 5119, 5279, 5399

Offset

1,1

Links

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

Formula

a(n) ~ 16n log n. - Charles R Greathouse IV, Jul 02 2016

Mathematica

Select[Prime[Range[2000]], MemberQ[{39}, Mod[#, 40]]&] (* Vincenzo Librandi, Aug 22 2012 *)

Prog

(Magma) [p: p in PrimesUpTo(7000) | p mod 40 eq 39 ]; // Vincenzo Librandi, Aug 22 2012
(PARI) is(n)=isprime(n) && n%40==39 \\ Charles R Greathouse IV, Jul 02 2016

Crossrefs

Cf. A000040.

Sequence in context: A358315 A191227 A142747 * A089686 A278837 A260335

Adjacent sequences: A142195 A142196 A142197 * A142199 A142200 A142201

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved