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First we have to find a Prime number by which 18 is divisible.
18 is divisible by both 2 and 3. However, we can start with any number.
18/3 = 6, now we have to look for a prime number by which 6 is divisible.
6/3 = 2, 2 is divisible by itself.
So, prime factorization of 18 = 2x3x3.
Wiki User
∙ 11y ago
Wiki User
∙ 8y agoUse a factor tree.
18
9,2
3,3,2
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As opposed to... Forget that. The prime factorization of 18 is 2 x 3 x 3.
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