Q: What are the prime factors of the number 720,732?

 A: 2, 3, 17, 3533

Why are those the prime factors of the number 720,732?

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 720,732

720,732
Factor Arrows
2360,366
Factor Arrows
2180,183
Factor Arrows
360,061
Factor Arrows
173,533

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, 17, 3533

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 17 x 3,533 = 720,732

This can also be written as 22 x 31 x 171 x 3,5331 = 720,732

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


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