A142790 Primes congruent to 23 mod 60.

23, 83, 263, 383, 443, 503, 563, 683, 743, 863, 983, 1103, 1163, 1223, 1283, 1523, 1583, 1823, 2003, 2063, 2243, 2423, 2543, 2663, 2843, 2903, 2963, 3023, 3083, 3203, 3323, 3623, 3803, 3863, 3923, 4283, 4463, 4523, 4583, 4643, 4703, 4943, 5003, 5303, 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 02 2016

Mathematica

Select[Prime[Range[800]], MemberQ[{23}, Mod[#, 60]] &] (* Vincenzo Librandi, Sep 04 2012 *)

Prog

(Magma) [p: p in PrimesUpTo(6000) | p mod 60 eq 23 ]; // Vincenzo Librandi, Sep 04 2012
(PARI) is(n)=isprime(n) && n%60==23 \\ Charles R Greathouse IV, Jul 02 2016

Crossrefs

Cf. A000040.

Sequence in context: A339475 A167573 A318356 * A288340 A316378 A323147

Adjacent sequences: A142787 A142788 A142789 * A142791 A142792 A142793

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved