FUN-Is-A-Number-Prime
Define a function isPrime/is_prime() that takes one integer argument and returns true/True or false/False depending on if the integer is a prime.
Per Wikipedia, a prime number (or a prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself.
Example
isPrime(5)
=> true
Assumptions
- You can assume you will be given an integer input.
- You can not assume that the integer will be only positive. You may be given negative numbers as well (or 0).