Problem: Prime Numbers
A prime number is a number that can be evenly divided by only itself and 1. For example, the number 5 is prime because it can be evenly divided by only 1 and 5. The number 6, however, is not prime because it can be evenly divided by 1, 2, 3, and 6. Write a Boolean function named Is Prime that takes an integer as an argument and returns true if the argument is a prime number or false otherwise. Use the function in an application that lets the user enter a number and then displays a message indicating whether the number is prime.