A142381 Primes congruent to 30 mod 47.

359, 547, 641, 829, 1487, 2239, 2333, 2521, 2803, 2897, 3461, 3931, 4871, 5059, 5153, 5623, 5717, 6469, 6563, 7127, 7691, 7879, 8161, 8443, 8537, 8819, 9007, 11827, 12109, 12203, 12391, 13049, 13331, 13613, 14083, 14177, 14741, 14929, 15493, 16057, 16339

Offset

1,1

Links

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

Formula

a(n) ~ 46n log n. - Charles R Greathouse IV, Jul 03 2016

Mathematica

Select[Prime[Range[2500]], MemberQ[{30}, Mod[#, 47]] &] (* Vincenzo Librandi, Aug 27 2012 *)
Select[Range[30, 17000, 47], PrimeQ] (* Harvey P. Dale, Apr 29 2019 *)

Prog

(Magma) [p: p in PrimesUpTo(18000) | p mod 47 eq 30]; // Vincenzo Librandi, Aug 27 2012
(PARI) is(n)=isprime(n) && n%47==30 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A186461 A344285 A344286 * A054826 A101796 A175537

Adjacent sequences: A142378 A142379 A142380 * A142382 A142383 A142384

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved