Q: What are the prime factors of the number 16,171,407?

 A: 3, 7, 3169

Why are those the prime factors of the number 16,171,407?

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 16,171,407

16,171,407
Factor Arrows
35,390,469
Factor Arrows
31,796,823
Factor Arrows
3598,941
Factor Arrows
3199,647
Factor Arrows
366,549
Factor Arrows
322,183
Factor Arrows
73,169

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, 7, 3169

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 3 x 7 x 3,169 = 16,171,407

This can also be written as 36 x 71 x 3,1691 = 16,171,407

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


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