Q: What are the prime factors of the number 787,542,700?

 A: 2, 5, 7, 160723

Why are those the prime factors of the number 787,542,700?

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 787,542,700

787,542,700
Factor Arrows
2393,771,350
Factor Arrows
2196,885,675
Factor Arrows
539,377,135
Factor Arrows
57,875,427
Factor Arrows
71,125,061
Factor Arrows
7160,723

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, 5, 7, 160723

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 7 x 7 x 160,723 = 787,542,700

This can also be written as 22 x 52 x 72 x 160,7231 = 787,542,700

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


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