A165446 Primes p such that (p reversed)+2 is a prime.

3, 5, 11, 17, 53, 59, 71, 101, 113, 137, 173, 191, 503, 509, 521, 557, 563, 569, 587, 593, 599, 701, 719, 743, 773, 941, 947, 971, 1019, 1031, 1049, 1109, 1163, 1277, 1283, 1301, 1319, 1373, 1409, 1427, 1433, 1439, 1451, 1493, 1511, 1523, 1571, 1583, 1601

Offset: 1

Author

Vincenzo Librandi, Sep 20 2009

Keywords

• nonn
• base

Examples

			17 is in the sequence because 71+2=73 prime; 971 is in the sequence because 179+2=181 prime.
		

Links

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

Programs

Magma

[p: p in PrimesInInterval(2,400) | IsPrime(q+2) where q is Seqint(Reverse(Intseq(p)))]; // Vincenzo Librandi, Sep 15 2013

Mathematica

Select[Prime[Range[2, 1700]], PrimeQ[FromDigits[Reverse[IntegerDigits[#]]] + 2]&](* Vincenzo Librandi, Sep 15 2013 *)

Extensions

Edited by N. J. A. Sloane, Sep 20 2009