The factors of 45 are 1, 3, 5, 9, 15, 45
Of those, 3 and 5 are prime numbers.
The prime factors of 45 are 3 and 5.
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45 has two prime factors: 3 and 5.
The factors of 45 are 1,3,5,9 and 15 those are the factors of 45.
The factors of 45 are: 1 3 5 9 15 45 The prime factors are: 3 x 3 x 5
If you mean 45 then it is a composite number because it has more than two factors
Prime factorization of 45 is 3x3x5. Prime factorization of 65 is 5x13.