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A142017

Primes congruent to 13 mod 31.

13, 137, 199, 509, 571, 757, 881, 1129, 1439, 1811, 1873, 1997, 2617, 2741, 2803, 2927, 3299, 3361, 3547, 3671, 3733, 3919, 4229, 4663, 4787, 4973, 5407, 5531, 5717, 5779, 5903, 6089, 6151, 6337, 6709, 6833, 7019, 7577, 7639, 7949, 8011, 8693, 8941, 9127

(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[13, 20000, 31], PrimeQ] (* Vladimir Joseph Stephan Orlovsky, Apr 20 2011 *)

PROG

(Magma) [ p: p in PrimesUpTo(30000) | p mod 31 eq 13 ]; // Vincenzo Librandi, Apr 20 2011

(PARI) is(n)=isprime(n) && n%31==13 \\ Charles R Greathouse IV, Jul 03 2016