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45 is a composite number. A Prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 have a different name.

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Q: Is 45 a prime or composite?

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prime numbers have only factors of themselves and 1; therefore 45 is composite--it has factors of 1,3,5,9,15,45

45 is a composite number. Its factors are 1, 3, 5, 9, 15, and 45, which makes 45 composite.

Composite45 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 have a different name.45 is composite. It is divisible by 3, 5, and 9, which makes it composite, as well as by 1 and 45, which if alone would make it prime.

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