515C Drazil and Factorial
Drazil is playing a math game with Varda.
Let's define for positive integer x as
a product of factorials of its digits. For example,
.
First, they choose a decimal number a consisting of n digits that contains at least one digit larger than 1.
This number may possibly start with leading zeroes. Then they should find maximum positive number x
1. x doesn't contain neither digit 0 nor digit 1.
2. =
.
Help friends find such number.
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