Q: What are the prime factors of the number 84,206,320?

 A: 2, 5, 11, 8699

Why are those the prime factors of the number 84,206,320?

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 84,206,320

84,206,320
Factor Arrows
242,103,160
Factor Arrows
221,051,580
Factor Arrows
210,525,790
Factor Arrows
25,262,895
Factor Arrows
51,052,579
Factor Arrows
1195,689
Factor Arrows
118,699

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:

2, 5, 11, 8699

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 11 x 11 x 8,699 = 84,206,320

This can also be written as 24 x 51 x 112 x 8,6991 = 84,206,320

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


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