Q: What are the prime factors of the number 3,879,568?

 A: 2, 7, 11, 47, 67

Why are those the prime factors of the number 3,879,568?

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 3,879,568

3,879,568
Factor Arrows
21,939,784
Factor Arrows
2969,892
Factor Arrows
2484,946
Factor Arrows
2242,473
Factor Arrows
734,639
Factor Arrows
113,149
Factor Arrows
4767

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, 7, 11, 47, 67

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 11 x 47 x 67 = 3,879,568

This can also be written as 24 x 71 x 111 x 471 x 671 = 3,879,568

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


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