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A235150
Primes p such that (p reversed) + 9 is also a prime.
1
2, 23, 29, 41, 43, 47, 83, 89, 223, 239, 241, 257, 269, 271, 281, 293, 401, 443, 449, 461, 463, 467, 479, 811, 821, 823, 829, 839, 853, 859, 877, 881, 883, 887, 2003, 2027, 2039, 2053, 2081, 2089, 2113, 2129, 2131, 2137, 2161, 2179, 2221, 2237, 2251, 2269, 2281
OFFSET
1,1
LINKS
EXAMPLE
83 is in the sequence because 38+9=47 is prime.
MATHEMATICA
Select[Prime[Range[4000]], PrimeQ[FromDigits[Reverse[IntegerDigits[#]]] + 9]&]
PROG
(Magma) [p: p in PrimesUpTo(4000) | IsPrime(q+9) where q is Seqint(Reverse(Intseq(p)))];
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Vincenzo Librandi, Jan 04 2014
STATUS
approved