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What is the prime factorization of 126

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126:2 = 63 → 1st PRIME FACTOR = 2
63:3 = 21 → 2nd PRIME FACTOR = 3
21:3 = 7 → 3rd PRIME FACTOR = 3
7: 7 = 1 → 4th PRIME FACTOR = 7

Then 126 = 2 x 3² x 7



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