A142244 - OEIS

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A142244

Primes congruent to 23 mod 42.

23, 107, 149, 191, 233, 317, 359, 401, 443, 569, 653, 821, 863, 947, 1031, 1283, 1367, 1409, 1451, 1493, 1619, 1787, 1871, 1913, 1997, 2039, 2081, 2207, 2333, 2417, 2459, 2543, 2711, 2753, 2837, 2879, 2963, 3089, 3257, 3299, 3467, 3593, 3677, 3719, 3761

(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[Prime[Range[1500]], MemberQ[{23}, Mod[#, 42]]&] (* Vincenzo Librandi, Aug 24 2012 *)

Select[Range[23, 4000, 42], PrimeQ] (* Harvey P. Dale, Dec 18 2013 *)

PROG

(Magma) [p: p in PrimesUpTo(4000) | p mod 42 eq 23 ]; // Vincenzo Librandi, Aug 24 2012