Q: What are the prime factors of the number 868,392?

 A: 2, 3, 7, 1723

Why are those the prime factors of the number 868,392?

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 868,392

868,392
Factor Arrows
2434,196
Factor Arrows
2217,098
Factor Arrows
2108,549
Factor Arrows
336,183
Factor Arrows
312,061
Factor Arrows
71,723

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, 3, 7, 1723

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 7 x 1,723 = 868,392

This can also be written as 23 x 32 x 71 x 1,7231 = 868,392

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


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