A142550 Primes congruent to 20 mod 53.

73, 179, 709, 1451, 1663, 2087, 2617, 3041, 3253, 3359, 3571, 3677, 3889, 5479, 5903, 6221, 6857, 7069, 8447, 9613, 9719, 9931, 10037, 10567, 11839, 12157, 12263, 12899, 13217, 14489, 15443, 15761, 15973, 16927, 17033, 17351, 17669, 17881, 17987, 18199

Offset

1,1

Links

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

Formula

a(n) ~ 52n log n. - Charles R Greathouse IV, Jul 03 2016

Mathematica

Select[Prime[Range[2600]], MemberQ[{20}, Mod[#, 53]] &] (* Vincenzo Librandi, Aug 30 2012

Prog

(Magma) [p: p in PrimesUpTo(20000) | p mod 53 eq 20]; // Vincenzo Librandi, Aug 30 2012
(PARI) is(n)=isprime(n) && n%53==20 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A044405 A044786 A244774 * A269790 A142741 A088199

Adjacent sequences: A142547 A142548 A142549 * A142551 A142552 A142553

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved