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%I #10 Sep 08 2022 08:45:36
%S 89,277,653,1123,1217,1499,2063,2251,2909,3191,3943,4507,4789,6011,
%T 6199,6481,6763,6857,7703,8737,8831,9677,10429,10711,10993,11087,
%U 11369,11839,11933,12497,12967,13249,13907,14753,15787,15881,16069,16633,17291,17573
%N Primes congruent to 42 mod 47.
%H Vincenzo Librandi, <a href="/A142393/b142393.txt">Table of n, a(n) for n = 1..1000</a>
%F a(n) ~ 46n log n. - _Charles R Greathouse IV_, Jul 03 2016
%t Select[Prime[Range[2500]], MemberQ[{42}, Mod[#, 47]] &] (* _Vincenzo Librandi_, Aug 27 2012 *)
%o (Magma) [p: p in PrimesUpTo(18000) | p mod 47 eq 42]; // _Vincenzo Librandi_, Aug 27 2012
%o (PARI) is(n)=isprime(n) && n%47==42 \\ _Charles R Greathouse IV_, Jul 03 2016
%Y Cf. A000040.
%K nonn,easy
%O 1,1
%A _N. J. A. Sloane_, Jul 11 2008