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- All Contests
- ProjectEuler+
- Project Euler #41: Pandigital prime

# Project Euler #41: Pandigital prime

# Project Euler #41: Pandigital prime

Contest ends in

_{This problem is a programming version of Problem 41 from projecteuler.net}

We shall say that an -digit number is pandigital if it makes use of all the digits 1 to exactly once. For example, is a -digit pandigital and is also prime.

What is the largest -digit pandigital prime ? If there is none, print -1

**Input Format**

First line contains that denotes the number of test cases. This is followed by lines, each containing an integer, .

**Constraints**

**Output Format**

Print the required answer for each test case.

**Sample Input**

```
2
100
10000
```

**Sample Output**

```
-1
4231
```