A142272 Primes congruent to 23 mod 43.

23, 109, 281, 367, 797, 883, 1399, 1571, 1657, 2087, 2689, 2861, 3119, 3463, 4409, 5011, 5441, 5527, 6043, 6301, 6473, 7247, 7333, 7591, 8537, 8623, 9311, 9397, 10343, 10429, 10601, 10687, 10859, 11117, 11633, 11719, 12149, 12923, 13009, 13267, 13697, 14557

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Formula

a(n) ~ 42n log n. - Charles R Greathouse IV, Jul 02 2016

Mathematica

Select[Prime[Range[5000]], MemberQ[{23}, Mod[#, 43]] &] (* Vincenzo Librandi, Aug 25 2012 *)

Prog

(Magma) [p: p in PrimesUpTo(16000) | p mod 43 eq 23]; // Vincenzo Librandi, Aug 25 2012
(PARI) is(n)=isprime(n) && n%43==23 \\ Charles R Greathouse IV, Jul 02 2016

Crossrefs

Cf. A000040.

Sequence in context: A139912 A176928 A157607 * A124951 A126410 A356877

Adjacent sequences: A142269 A142270 A142271 * A142273 A142274 A142275

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved