Concepts tested by this program:
1.Learn to organize code within a function
2.Learn to pass data to and return Boolean data from function
3.Use of loop
4.Use file processing Program Prime Numbers A prime number is an integer that is greater than 1 and that is only evenly divisible by itself and 1.
For example, the number 5 is prime because it can only be evenly divided by 1 and 5.
The number 6, however, is