45
15,3
5,3,3
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Prime factorization of 45 is 3x3x5. Prime factorization of 65 is 5x13.
Students learn that the prime factorization of a number is the given number written as the product of its prime factors. For example, to find the prime factorization of 45, use a factor tree to find that 45 is 5 x 9, and 9 is 3 x 3. So the prime factorization of 45 is 5 x 3 x 3, or 5 x 3^2.
a prime factorization tree
The prime factorization of 45 is 3 x 3 x 5. To find an LCM it is necessary to compare and combine that prime factorization with at least one other.
612 306,2 153,2,2 51,3,2,2 17,3,3,2,2