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A142022

Primes congruent to 18 mod 31.

173, 359, 421, 607, 1103, 1289, 1723, 1847, 2281, 2467, 2591, 2777, 2963, 3583, 3769, 4079, 4327, 4451, 4513, 4637, 5009, 5381, 5443, 5939, 6311, 6373, 6869, 7489, 8171, 8233, 8419, 8543, 9349, 9473, 9721, 9907, 10093, 10589, 10651, 10837, 11519, 11953

(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) ~ 30n log n. - Charles R Greathouse IV, Jul 03 2016

MATHEMATICA

Select[Range[18, 20000, 31], PrimeQ] (* Vladimir Joseph Stephan Orlovsky, Apr 30 2011 *)

PROG

(Magma) [p: p in PrimesUpTo(12000) | p mod 31 eq 18 ]; // Vincenzo Librandi, Aug 17 2012

(PARI) is(n)=isprime(n) && n%31==18 \\ Charles R Greathouse IV, Jul 03 2016