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A141975

Primes congruent to 25 mod 28.

53, 109, 137, 193, 277, 389, 557, 613, 641, 809, 977, 1033, 1061, 1117, 1201, 1229, 1453, 1481, 1621, 1733, 1789, 1873, 1901, 2069, 2153, 2237, 2293, 2377, 2657, 2713, 2741, 2797, 2909, 3049, 3217, 3301, 3329, 3413, 3469, 3581, 3637, 3833, 3889, 3917, 4001

(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[1500]], MemberQ[{25}, Mod[#, 28]]&] (* Vincenzo Librandi, Aug 17 2012 *)

PROG

(Magma) [p: p in PrimesUpTo(5000) | p mod 28 eq 25 ]; // Vincenzo Librandi, Aug 17 2012

(PARI) is(n)=isprime(n) && n%28==25 \\ Charles R Greathouse IV, Jul 03 2016