Q: What are the prime factors of the number 906,528?

 A: 2, 3, 7, 19, 71

Why are those the prime factors of the number 906,528?

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 906,528

906,528
Factor Arrows
2453,264
Factor Arrows
2226,632
Factor Arrows
2113,316
Factor Arrows
256,658
Factor Arrows
228,329
Factor Arrows
39,443
Factor Arrows
71,349
Factor Arrows
1971

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, 19, 71

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 7 x 19 x 71 = 906,528

This can also be written as 25 x 31 x 71 x 191 x 711 = 906,528

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


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