Q: What are the prime factors of the number 478,658,136?

 A: 2, 3, 11, 397, 4567

Why are those the prime factors of the number 478,658,136?

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 478,658,136

478,658,136
Factor Arrows
2239,329,068
Factor Arrows
2119,664,534
Factor Arrows
259,832,267
Factor Arrows
319,944,089
Factor Arrows
111,813,099
Factor Arrows
3974,567

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, 11, 397, 4567

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 11 x 397 x 4,567 = 478,658,136

This can also be written as 23 x 31 x 111 x 3971 x 4,5671 = 478,658,136

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


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