A141965 Primes congruent to 26 mod 27.

53, 107, 269, 431, 593, 647, 701, 809, 863, 971, 1187, 1511, 1619, 1889, 1997, 2213, 2267, 2591, 2699, 2753, 2861, 2969, 3023, 3347, 3617, 3671, 3779, 3833, 4049, 4157, 4211, 4373, 4481, 4643, 4751, 4967, 5021, 5237, 5399, 5507, 5669, 5939, 6047, 6101, 6263

Offset: 1

Author

N. J. A. Sloane, Jul 11 2008

Keywords

• nonn
• easy

Comments

Primes congruent to 53 mod 54. - Chai Wah Wu, Apr 29 2025

Links

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

Crossrefs

Cf. A000040.

Programs

Magma

[p: p in PrimesUpTo(7000) | p mod 27 eq 26 ]; // Vincenzo Librandi, Aug 16 2012

Mathematica

Select[Range[26, 30000, 27], PrimeQ] (* Vladimir Joseph Stephan Orlovsky, Jun 21 2011 *)

PARI

is(n)=isprime(n) && n%27==26 \\ Charles R Greathouse IV, Jul 01 2016