A142184 Primes congruent to 3 mod 40.

3, 43, 83, 163, 283, 443, 523, 563, 643, 683, 883, 1123, 1163, 1283, 1483, 1523, 1723, 2003, 2083, 2203, 2243, 2683, 2803, 2843, 2963, 3083, 3163, 3203, 3323, 3643, 3803, 3923, 4003, 4243, 4283, 4363, 4483, 4523, 4603, 4643, 4723, 5003, 5323, 5443, 5483

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 03 2016

Mathematica

Select[Prime[Range[2000]], MemberQ[{3}, Mod[#, 40]]&] (* Vincenzo Librandi, Aug 20 2012 *)
Select[Range[3, 5500, 40], Prime (* Harvey P. Dale, Jun 10 2015 *)

Prog

(Magma)[p: p in PrimesUpTo(7000) | p mod 40 eq 3]; // Vincenzo Librandi, Aug 20 2012
(PARI) is(n)=isprime(n) && n%40==3 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A185632 A006033 A246994 * A199348 A002551 A127930

Adjacent sequences: A142181 A142182 A142183 * A142185 A142186 A142187

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved