A126330 Primes of the form 4p+3 where p is a prime.

11, 23, 31, 47, 71, 79, 127, 151, 167, 191, 239, 271, 359, 431, 439, 599, 607, 631, 719, 727, 911, 919, 967, 1031, 1087, 1231, 1327, 1399, 1439, 1471, 1559, 1607, 1759, 1831, 1847, 1871, 1951, 1999, 2039, 2087, 2287, 2311, 2351, 2399, 2591, 2647, 2711, 2767

Offset: 1

Author

J. M. Bergot, Mar 09 2007

Keywords

• nonn

Links

• Robert Israel, Table of n, a(n) for n = 1..10000

Crossrefs

For the primes p see A023213.

Cf. A002145, A004767, A080148, A090866, A095278.

Programs

Maple

select(p -> isprime(p) and isprime((p-3)/4), [seq(p,p=7..10000,4)]); # Robert Israel, Aug 08 2019

Mathematica

Select[3 + 4Prime@Range[130], PrimeQ] (* Ray Chandler, Jun 29 2008 *)

Extensions

Checked and extended by N. J. A. Sloane, Mar 10 2007