Q: What are the prime factors of the number 16,516,170?

 A: 2, 3, 5, 11, 67, 83

Why are those the prime factors of the number 16,516,170?

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 16,516,170

16,516,170
Factor Arrows
28,258,085
Factor Arrows
32,752,695
Factor Arrows
3917,565
Factor Arrows
3305,855
Factor Arrows
561,171
Factor Arrows
115,561
Factor Arrows
6783

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, 11, 67, 83

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 5 x 11 x 67 x 83 = 16,516,170

This can also be written as 21 x 33 x 51 x 111 x 671 x 831 = 16,516,170

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


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