2, 3, 3
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The prime factorization of 18 is 2*3*3 or 2 * 3^2
As opposed to... Forget that. The prime factorization of 18 is 2 x 3 x 3.
The GCF of 18, 27, and 63 is 9. The prime factorization of 18 is 2*3*3 The prime factorization of 27 is 3*3*3 The prime factorization of 63 is 3*3*7 The GCF is 3*3 = 9.
The GCF of 18, 27, and 99 is 9. The prime factorization of 18 is 2*3*3. The prime factorization of 27 is 3*3*3 The prime factorization of 99 is 3*3*11 So the GCF = 3*3 = 9.
The prime factorization of 18 is 2 x 3 x 3, so 2 and 3 are both prime factors of 18.