Q: What are the prime factors of the number 718,320?

 A: 2, 3, 5, 41, 73

Why are those the prime factors of the number 718,320?

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 718,320

718,320
Factor Arrows
2359,160
Factor Arrows
2179,580
Factor Arrows
289,790
Factor Arrows
244,895
Factor Arrows
314,965
Factor Arrows
52,993
Factor Arrows
4173

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, 41, 73

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 41 x 73 = 718,320

This can also be written as 24 x 31 x 51 x 411 x 731 = 718,320

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


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