A141971 - OEIS

A141971

Primes congruent to 15 mod 28.

43, 71, 127, 211, 239, 379, 463, 491, 547, 631, 659, 743, 827, 883, 911, 967, 1051, 1163, 1303, 1471, 1499, 1583, 1667, 1723, 2003, 2087, 2143, 2311, 2339, 2423, 2591, 2647, 2731, 2843, 2927, 3011, 3067, 3319, 3347, 3571, 3739, 3767, 3823, 3851, 3907, 4019

(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 03 2016

MATHEMATICA

Select[Prime[Range[600]], Mod[#, 28]==15&] (* Harvey P. Dale, Nov 01 2011 *)

PROG

(Magma) [p: p in PrimesUpTo(5000) | p mod 28 eq 15 ]; // Vincenzo Librandi, Aug 17 2012

(PARI) is(n)=isprime(n) && n%28==15 \\ Charles R Greathouse IV, Jul 03 2016