Input: alphanumeric string. You can assume that the string will only contain the characters [0-9A-Z]. This can come from a parameter, command line, or STDIN. Digits are always before letters in terms of the base. Think like an extended version of HEX.
X,Y Such that
Y is the minimum base required to parse the string and
X is the decimal value of the input string in that base.
Scoring: This is a golf, so shortest code in bytes wins.