Q: What are the prime factors of the number 4,408,640?

 A: 2, 5, 23, 599

Why are those the prime factors of the number 4,408,640?

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 4,408,640

4,408,640
Factor Arrows
22,204,320
Factor Arrows
21,102,160
Factor Arrows
2551,080
Factor Arrows
2275,540
Factor Arrows
2137,770
Factor Arrows
268,885
Factor Arrows
513,777
Factor Arrows
23599

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, 23, 599

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 5 x 23 x 599 = 4,408,640

This can also be written as 26 x 51 x 231 x 5991 = 4,408,640

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


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