Q: What are the prime factors of the number 870,824?

 A: 2, 199, 547

Why are those the prime factors of the number 870,824?

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 870,824

870,824
Factor Arrows
2435,412
Factor Arrows
2217,706
Factor Arrows
2108,853
Factor Arrows
199547

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, 199, 547

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 199 x 547 = 870,824

This can also be written as 23 x 1991 x 5471 = 870,824

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


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