What is a prime number - Computers & Internet

A natural number who can only evenly be divided by 1 or by itself. Examples of prime numbers are: 1, 2, 3, 5, 7,11, 13 ,17 etc... The number 6 for example is considered a composite number because it can be divided evenly by 1, 2 ,3, or itself. Happy Math!!!

A prime number is a positive whole number that has no positive divisors other than one and itself. See
http://en.wikipedia.org/wiki/Prime_number

A prime number is a number that can only be multiplied by itself and 1 - example 3 can only be multiplied by itself and 1.