A167215 Primes whose reversal + 1 is also prime.

2, 61, 211, 271, 277, 283, 601, 613, 631, 643, 661, 691, 829, 853, 883, 2011, 2017, 2029, 2083, 2089, 2143, 2161, 2203, 2221, 2239, 2251, 2269, 2281, 2287, 2293, 2341, 2347, 2371, 2383, 2389, 2467, 2551, 2683, 2719, 2731, 2749, 2767, 2791, 2803, 2851

Offset

1,1

Comments

61 is prime and 16+1 = 17 is also a prime.

Links

Jens Kruse Andersen, Table of n, a(n) for n = 1..10000

Mathematica

Select[Prime[Range[500]], PrimeQ[IntegerReverse[#] + 1] &] (* Vincenzo Librandi, Feb 25 2020 *)

Prog

(Magma) [p: p in PrimesUpTo(3000) | IsPrime((Seqint(Reverse(Intseq(p)))) + 1)]; // Vincenzo Librandi, Feb 25 2020

Crossrefs

Cf. A007500.

Sequence in context: A041449 A261944 A142729 * A279624 A088078 A172230

Adjacent sequences: A167212 A167213 A167214 * A167216 A167217 A167218

Keyword

base,nonn

Author

Claudio Meller, Oct 30 2009

Status

approved