Q: What are the prime factors of the number 870,136?

 A: 2, 23, 4729

Why are those the prime factors of the number 870,136?

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 870,136

870,136
Factor Arrows
2435,068
Factor Arrows
2217,534
Factor Arrows
2108,767
Factor Arrows
234,729

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, 23, 4729

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 23 x 4,729 = 870,136

This can also be written as 23 x 231 x 4,7291 = 870,136

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


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