A141924 - OEIS

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A141924

Primes congruent to 20 mod 23.

43, 89, 181, 227, 457, 503, 641, 733, 1009, 1193, 1423, 1607, 1699, 2113, 2251, 2297, 2389, 2711, 2803, 3079, 3217, 3539, 3631, 3677, 3769, 3907, 4091, 4229, 4597, 4643, 4919, 5011, 5333, 5471, 5563, 5701, 5839, 6299, 6529, 7127, 7219, 7541, 7817, 8093

(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) ~ 22n log n. - Charles R Greathouse IV, Jul 02 2016

MATHEMATICA

Select[Range[20, 20000, 23], PrimeQ] (* Vladimir Joseph Stephan Orlovsky, May 18 2011 *)

PROG

(Magma) [p: p in PrimesUpTo(9000) | p mod 23 eq 20 ]; // Vincenzo Librandi, Aug 16 2012

(PARI) is(n)=isprime(n) && n%23==20 \\ Charles R Greathouse IV, Jul 02 2016