Q: What are the prime factors of the number 663,072?

 A: 2, 3, 6907

Why are those the prime factors of the number 663,072?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 663,072

663,072
Factor Arrows
2331,536
Factor Arrows
2165,768
Factor Arrows
282,884
Factor Arrows
241,442
Factor Arrows
220,721
Factor Arrows
36,907

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 6907

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 6,907 = 663,072

This can also be written as 25 x 31 x 6,9071 = 663,072

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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