close
login
A074833
Primes whose ternary reversal is also prime.
7
2, 5, 7, 11, 13, 19, 23, 31, 37, 41, 47, 53, 61, 67, 79, 83, 101, 103, 113, 127, 131, 151, 163, 167, 173, 179, 181, 191, 193, 211, 227, 233, 263, 281, 293, 311, 331, 349, 353, 359, 401, 409, 419, 421, 431, 439, 449, 463, 467, 491, 499, 503, 521, 523, 541, 563
OFFSET
1,1
LINKS
MATHEMATICA
Prime[ Select[ Range[110], PrimeQ[ FromDigits[ Reverse[ IntegerDigits[ Prime[ # ], 3]], 3]] &]]
KEYWORD
base,easy,nonn
AUTHOR
Robert G. Wilson v, Sep 09 2002
STATUS
approved