A127589 Primes of the form 16k + 5.

5, 37, 53, 101, 149, 181, 197, 229, 277, 293, 373, 389, 421, 613, 661, 677, 709, 757, 773, 821, 853, 997, 1013, 1061, 1093, 1109, 1237, 1301, 1381, 1429, 1493, 1621, 1637, 1669, 1733, 1861, 1877, 1973, 2053, 2069, 2213, 2293, 2309, 2341, 2357, 2389, 2437

Offset: 1

Author

Artur Jasinski, Jan 19 2007

Keywords

• nonn
• easy

Comments

All terms are the sum of two squares.

Primes with least significant digit 5 in hexadecimal. - Alonso del Arte, Oct 21 2022

Links

• T. D. Noe, Table of n, a(n) for n=1..1000

Crossrefs

Cf. A035050, A007522, A127575, A127576, A127577, A127578, A127580, A127581, A087522, A127586, A127587.

Programs

Mathematica

a = {}; Do[If[PrimeQ[16n + 5], AppendTo[a, 16n + 5]], {n, 0, 200}]; a
Select[16Range[200] + 5, PrimeQ] (* Alonso del Arte, Oct 21 2022 *)

PARI

select(x->(x%16)==5, primes(500)) \\ Michel Marcus, Oct 24 2022

Extensions

Invalid comment removed by Zak Seidov, Jul 22 2010