Introduction to Prime Numbers

Prime Numbers

A “prime” number is any integer greater than one whose only divisors are one and itself. For example, 7 is a prime number because its only factors are 1 and 7. A number that is not prime is called “composite” – such as 12 which has factors of 1, 2, 3, 4, 6, and 12. You should be able to determine if a number is prime or composite.