## Pandigital prime

### Problem 41

Published on Friday, 11th April 2003, 06:00 pm; Solved by 42270; Difficulty rating: 5%We shall say that an *n*-digit number is pandigital if it makes use of all the digits 1 to *n* exactly once. For example, 2143 is a 4-digit pandigital and is also prime.

What is the largest *n*-digit pandigital prime that exists?