A111312 Numbers n such that 11*n + 2 is prime.

0, 1, 7, 9, 15, 19, 21, 25, 37, 39, 49, 51, 55, 61, 67, 69, 75, 85, 97, 99, 109, 111, 117, 127, 135, 139, 141, 145, 147, 151, 169, 177, 181, 189, 201, 217, 219, 225, 229, 231, 237, 247, 249, 259, 265, 267, 277, 285, 289, 291, 301, 315, 319, 321, 331, 337, 345

Offset: 1

Author

Parthasarathy Nambi, Nov 03 2005

Keywords

• nonn
• easy

Examples

			If n=135 then 11*n + 2 = 1487 (prime).
		

Links

• Daniel Starodubtsev, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A017413, A090187.

Programs

Magma

[n: n in [0..100000] |IsPrime(11*n + 2)] // Vincenzo Librandi, Nov 13 2010

Mathematica

Select[Range[0,400],PrimeQ[11#+2]&] (* Harvey P. Dale, Mar 22 2020 *)

PARI

is(n)=isprime(11*n+2) \\ Charles R Greathouse IV, Jun 13 2017