Q: What are the prime factors of the number 7,120,384?

 A: 2, 13907

Why are those the prime factors of the number 7,120,384?

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 7,120,384

7,120,384
Factor Arrows
23,560,192
Factor Arrows
21,780,096
Factor Arrows
2890,048
Factor Arrows
2445,024
Factor Arrows
2222,512
Factor Arrows
2111,256
Factor Arrows
255,628
Factor Arrows
227,814
Factor Arrows
213,907

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, 13907

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 13,907 = 7,120,384

This can also be written as 29 x 13,9071 = 7,120,384

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


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