Q: What are the prime factors of the number 9,671,805?

 A: 3, 5, 11, 13, 167

Why are those the prime factors of the number 9,671,805?

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 9,671,805

9,671,805
Factor Arrows
33,223,935
Factor Arrows
31,074,645
Factor Arrows
3358,215
Factor Arrows
3119,405
Factor Arrows
523,881
Factor Arrows
112,171
Factor Arrows
13167

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:

3, 5, 11, 13, 167

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 5 x 11 x 13 x 167 = 9,671,805

This can also be written as 34 x 51 x 111 x 131 x 1671 = 9,671,805

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


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