A167497 Primes p such that (p reversed)-8 is also a prime.

11, 13, 19, 31, 73, 79, 97, 103, 157, 163, 181, 193, 199, 523, 541, 571, 727, 739, 751, 907, 919, 967, 991, 1021, 1039, 1051, 1063, 1087, 1117, 1123, 1129, 1201, 1249, 1291, 1303, 1321, 1381, 1399, 1447, 1453, 1459, 1471, 1483, 1489, 1567, 1579, 1627, 1783

Offset

1,1

Links

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

Example

13->31-8=23; 19->91-8=83; 31->13-8=5; 73->37-8=29.

Mathematica

Select[Prime[Range[5, 4000]], PrimeQ[FromDigits[Reverse[IntegerDigits[#]]] - 8] &] (* Vincenzo Librandi, Sep 15 2013 *)

Prog

(Magma) [p: p in PrimesInInterval(11, 4000) | IsPrime(q-8) where q is Seqint(Reverse(Intseq(p)))]; // Vincenzo Librandi, Sep 15 2013

Crossrefs

Sequence in context: A081983 A081984 A145482 * A068579 A048519 A288878

Adjacent sequences: A167494 A167495 A167496 * A167498 A167499 A167500

Keyword

nonn,base

Author

Vincenzo Librandi, Nov 05 2009

Extensions

911 replaced by 919 - R. J. Mathar, Nov 08 2009

Status

approved