Problems > Emirp

Emirp

Difficulty: 1300 2000 ms 128 MB

math

An emirp is a prime whose reversal is a DIFFERENT prime (13 → 31). Is N an emirp?

Input: one integer N.

Output: YES or NO.

Constraints:

  • 1 ≤ N ≤ 109

Sample Tests

Input 1
13
Output 1
YES
Input 2
14
Output 2
NO

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