Q: What are the prime factors of the number 8,685,900?

 A: 2, 3, 5, 3217

Why are those the prime factors of the number 8,685,900?

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 8,685,900

8,685,900
Factor Arrows
24,342,950
Factor Arrows
22,171,475
Factor Arrows
3723,825
Factor Arrows
3241,275
Factor Arrows
380,425
Factor Arrows
516,085
Factor Arrows
53,217

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, 5, 3217

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 5 x 5 x 3,217 = 8,685,900

This can also be written as 22 x 33 x 52 x 3,2171 = 8,685,900

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


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