Q: What are the prime factors of the number 720,708?

 A: 2, 3, 19, 29, 109

Why are those the prime factors of the number 720,708?

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 720,708

720,708
Factor Arrows
2360,354
Factor Arrows
2180,177
Factor Arrows
360,059
Factor Arrows
193,161
Factor Arrows
29109

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, 19, 29, 109

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 19 x 29 x 109 = 720,708

This can also be written as 22 x 31 x 191 x 291 x 1091 = 720,708

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


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