A141909 Primes congruent to 4 mod 23.

73, 211, 257, 349, 487, 809, 947, 1039, 1223, 1361, 1453, 1499, 1637, 1867, 1913, 2143, 2281, 2557, 2741, 2833, 2879, 2971, 3109, 4259, 4397, 4673, 4903, 5087, 5179, 5501, 5639, 5869, 6007, 6053, 6329, 6421, 7019, 7433, 8123, 8353, 8537, 8629, 8951, 9043

Offset

1,1

Links

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

Formula

a(n) ~ 22n log n. - Charles R Greathouse IV, Jul 03 2016

Mathematica

Select[Range[4, 10000, 23], PrimeQ] (* Vladimir Joseph Stephan Orlovsky, Apr 05 2011 *)

Prog

(Magma) [p: p in PrimesUpTo(10000) | p mod 23 eq 4 ]; // Vincenzo Librandi, Aug 16 2012
(PARI) is(n)=isprime(n) && n%23==4 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040, A040984, A141908, A100201.

Sequence in context: A122723 A089786 A142894 * A296187 A142517 A158711

Adjacent sequences: A141906 A141907 A141908 * A141910 A141911 A141912

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved