A prime number is an integer that is evenly divisible only by 1 and itself. An example of a prime number is the integer 5. The only integers that divide evenly into 5 are 1 and 5. If we try to divide 5 by 2, we get 2 1/2, which is not an integer.
A composite number is an integer that is not prime. 6 is not a prime number. 6 is evenly divisible by both 2 and 3, so 6 is a composite number.
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