The bottom row of numbers multiplied together.
72
36,2
18,2,2
9,2,2,2
3,3,2,2,2
2 x 2 x 2 x 3 x 3 = 72
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the prime factorization of 32 is 2x2x2x2x2 and the factor tree is 32 8 4 2x4 2x2 2x2
If completed correctly, the bottom branch of a factor tree will be the prime factorization of the number at the top.
32 = 25
A Factor Tree
With a factor tree, yes.