Q: What are the prime factors of the number 28,717,584?

 A: 2, 3, 7, 85469

Why are those the prime factors of the number 28,717,584?

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 28,717,584

28,717,584
Factor Arrows
214,358,792
Factor Arrows
27,179,396
Factor Arrows
23,589,698
Factor Arrows
21,794,849
Factor Arrows
3598,283
Factor Arrows
785,469

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, 85469

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 7 x 85,469 = 28,717,584

This can also be written as 24 x 31 x 71 x 85,4691 = 28,717,584

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


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