Called a composite number.
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A composite number is a number that has more divisors than 1 and itself.
At least one other than 1 and itself. It can have infinitely many.
A prime number has only 2 divisors, 1 and itself. Any number with more than two divisors is a composite number. Composite numbers are made up of primes. Because of that, we can think of primes as the building blocks of composite numbers - just as we think of letters as the building blocks of words. For example, 3 is prime since its only divisors are 1 and 3. Now look at 6; it can be written as 2 x 3 so it has divisors, 1, 2, 3, and 6.A prime number is a positive integer with two factors: one and the number itself.A composite number is a positive integer with more than two factors.
In number theory, an abundant number is a number for which the sum of its proper divisors is greater than the number itself.
A composite number is a positive integer greater than 1 that has more than two distinct positive divisors. In this case, the number 51 is a composite number because it has divisors other than 1 and itself, such as 3 and 17. Numbers 31, 41, and 61 are all prime numbers, as they only have two distinct positive divisors, 1 and the number itself.