A154620 Primes p such that 31p+14 is prime.

3, 17, 23, 47, 53, 107, 113, 137, 179, 197, 233, 263, 269, 347, 353, 383, 389, 419, 449, 503, 563, 587, 593, 599, 617, 647, 659, 677, 683, 719, 773, 929, 1049, 1163, 1193, 1229, 1259, 1307, 1319, 1367, 1373, 1439, 1553, 1607, 1667, 1787, 1823, 1847, 1889

Offset: 1

Author

Vincenzo Librandi, Jan 17 2009

Keywords

• nonn
• easy

Examples

			For p=3, 31p+14=107; p=449, 31p+14=13933
		

Links

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

Crossrefs

Cf. A142018.

Programs

Magma

[p: p in PrimesUpTo(2000)|IsPrime(31*p+14)]; // Vincenzo Librandi, Jul 31 2012

Mathematica

Select[Prime[Range[9000]],PrimeQ[31#+14]&] (* Vincenzo Librandi, Jul 31 2012 *)