A235147 Primes p such that (p reversed)+3 is also a prime.

2, 41, 43, 61, 67, 83, 89, 401, 409, 421, 431, 433, 439, 443, 449, 457, 461, 463, 479, 487, 491, 499, 601, 607, 617, 619, 631, 641, 643, 653, 673, 683, 691, 809, 821, 823, 839, 857, 881, 4027, 4057, 4091, 4093, 4099, 4111, 4153, 4157, 4177, 4217, 4219, 4229

Offset: 1

Author

Vincenzo Librandi, Jan 04 2014

Keywords

• nonn
• base

Examples

			43 is in the sequence because 34+3=37 is prime.
		

Links

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

Crossrefs

Cf. A165446, A166501, A167460, A167466, A167473.

Programs

Magma

[p: p in PrimesUpTo(6000) | IsPrime(q+3) where q is Seqint(Reverse(Intseq(p)))];

Mathematica

Select[Prime[Range[6000]], PrimeQ[FromDigits[Reverse[IntegerDigits[#]]] + 3]&]