Q: What are the prime factors of the number 607,920?

 A: 2, 3, 5, 17, 149

Why are those the prime factors of the number 607,920?

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 607,920

607,920
Factor Arrows
2303,960
Factor Arrows
2151,980
Factor Arrows
275,990
Factor Arrows
237,995
Factor Arrows
312,665
Factor Arrows
52,533
Factor Arrows
17149

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, 5, 17, 149

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 17 x 149 = 607,920

This can also be written as 24 x 31 x 51 x 171 x 1491 = 607,920

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


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