login
A075239
Primes whose base 9 reversal is also prime.
7
2, 3, 5, 7, 11, 13, 17, 19, 23, 37, 43, 47, 67, 71, 73, 79, 83, 97, 101, 109, 113, 127, 139, 151, 157, 163, 173, 179, 181, 191, 193, 197, 227, 229, 239, 241, 331, 337, 353, 367, 373, 379, 383, 389, 397, 419, 433, 439, 457, 463, 479, 571, 577, 593, 599, 601, 607
OFFSET
1,1
LINKS
MATHEMATICA
Prime[ Select[ Range[115], PrimeQ[ FromDigits[ Reverse[ IntegerDigits[ Prime[ # ], 9]], 9]] &]]
KEYWORD
base,easy,nonn
AUTHOR
Robert G. Wilson v, Sep 09 2002
STATUS
approved