Prime Factorization of 39:
Express the composite number as a product of its prime factors.
Draw the factor tree.
The prime factorization of 39 is 3 · 13.
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![\"Prime_factorization_tree_39\"](\"/userfiles/image/Library/Algebra1/Prime_factorization_tree_39.gif\")
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")