A102721 Numbers n such that 11*n + 13 is prime.

0, 6, 8, 14, 18, 20, 24, 36, 38, 48, 50, 54, 60, 66, 68, 74, 84, 96, 98, 108, 110, 116, 126, 134, 138, 140, 144, 146, 150, 168, 176, 180, 188, 200, 216, 218, 224, 228, 230, 236, 246, 248, 258, 264, 266, 276, 284, 288, 290, 300, 314, 318

Offset: 1

Author

Parthasarathy Nambi, Feb 06 2005

Keywords

• nonn
• easy

Examples

			If n=0, then 11*0 + 13 = 13 (prime).
If n=50, then 11*50 + 13 = 563 (prime).
If n=108, then 11*108 + 13 = 1201 (prime).
		

Links

• Harvey P. Dale, Table of n, a(n) for n = 1..1000

Programs

Mathematica

For[n = 1, n < 320, n++, If[PrimeQ[11*n + 13], Print[n]]] (* Stefan Steinerberger, Feb 15 2006 *)
Select[Range[0,400,2],PrimeQ[11#+13]&] (* Harvey P. Dale, Dec 23 2017 *)

PARI

is(n)=isprime(11*n+13) \\ Charles R Greathouse IV, Jun 12 2017

Extensions

More terms from Stefan Steinerberger, Feb 15 2006