In this task, you need to output 'Yes' if the given number is a prime number otherwise output 'No'. A 'prime number' is a a whole number above 1 that can not be made by multiplying other whole numbers.

[EX Q]: 4271
[EX A]: Yes

[EX Q]: 12171
[EX A]: No

[EX Q]: 21757
[EX A]:
Yes