Indeed, 45 is a composite number. Its positive integer factors are 1, 3, 5, 9, 15, 45.
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9, 15, 45 are the composite factors of 45.
1, 3, 5, 9, 15, 45 Composite
45 is not prime. 45 = 3 * 3 * 5The number 45 is known to be a prime number. This learnt in 8th grade math.It is a composite number.45 factors are1,3,5,9,15,45There are more than 2 factors.
If you mean 45 then it is a composite number because it has more than two factors
45