Q: What are the prime factors of the number 868,896?

 A: 2, 3, 7, 431

Why are those the prime factors of the number 868,896?

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 868,896

868,896
Factor Arrows
2434,448
Factor Arrows
2217,224
Factor Arrows
2108,612
Factor Arrows
254,306
Factor Arrows
227,153
Factor Arrows
39,051
Factor Arrows
33,017
Factor Arrows
7431

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, 431

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 7 x 431 = 868,896

This can also be written as 25 x 32 x 71 x 4311 = 868,896

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


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