Q: What are the prime factors of the number 86,470,605?

 A: 3, 5, 13, 29, 1699

Why are those the prime factors of the number 86,470,605?

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 86,470,605

86,470,605
Factor Arrows
328,823,535
Factor Arrows
39,607,845
Factor Arrows
33,202,615
Factor Arrows
5640,523
Factor Arrows
1349,271
Factor Arrows
291,699

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, 13, 29, 1699

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 13 x 29 x 1,699 = 86,470,605

This can also be written as 33 x 51 x 131 x 291 x 1,6991 = 86,470,605

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


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