A141893 - OEIS

A141893

Primes congruent to 11 mod 21.

11, 53, 137, 179, 263, 347, 389, 431, 557, 599, 641, 683, 809, 977, 1019, 1061, 1103, 1187, 1229, 1439, 1481, 1523, 1607, 1733, 1901, 2027, 2069, 2111, 2153, 2237, 2447, 2531, 2657, 2699, 2741, 2909, 3119, 3203, 3329, 3371, 3413, 3539, 3581, 3623, 3833, 3917

(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) ~ 12n log n. - Charles R Greathouse IV, Jul 02 2016

MATHEMATICA

Select[Range[11, 5000, 21], PrimeQ] (* Vladimir Joseph Stephan Orlovsky, Apr 04 2011 *)

PROG

(Magma) [ p: p in PrimesUpTo(5000) | p mod 21 eq 11 ]; // Vincenzo Librandi, Apr 05 2011

(PARI) is(n)=isprime(n) && n%21==11 \\ Charles R Greathouse IV, Jul 02 2016