#Mathematica 77 43
IntegerDigits[n,b] represents n as a list of digits in base b. Each base-b digit is expressed decimally.
For example, 16781313 is not a palindrome in base 17:
IntegerDigits[16781313, 17]
{11, 13, 15, 11, 14, 1}
However, it is a palindrome in base 16:
IntegerDigits[16781313, 16]
{1, 0, 0, 1, 0, 0, 1}
If the ordered pairs in the above examples were entered,
(x=Input[]~IntegerDigits~Input[])==Reverse@x
would return
False (* (because {11, 13, 15, 11, 14, 1} != {1, 14, 11, 15, 13, 11} ) *)
True (* (because {1, 0, 0, 1, 0, 0, 1} is equal to {1, 0, 0, 1, 0, 0, 1} ) *)