10 is a composite number. A composite number is a positive integer that has at least one positive divisor other than one and itself. In the case of 10, it can be divided evenly by 1, 2, 5, and 10. Since it has divisors other than 1 and itself, it is classified as a composite number.
Prime numbers, on the other hand, are numbers greater than 1 that have no positive divisors other than 1 and themselves. Examples of prime numbers include 2, 3, 5, 7, and so on. Since 10 does not meet this criterion, it is not a prime number.