Q: What are the prime factors of the number 5,623,872?

 A: 2, 3, 17, 1723

Why are those the prime factors of the number 5,623,872?

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 5,623,872

5,623,872
Factor Arrows
22,811,936
Factor Arrows
21,405,968
Factor Arrows
2702,984
Factor Arrows
2351,492
Factor Arrows
2175,746
Factor Arrows
287,873
Factor Arrows
329,291
Factor Arrows
171,723

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, 17, 1723

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 3 x 17 x 1,723 = 5,623,872

This can also be written as 26 x 31 x 171 x 1,7231 = 5,623,872

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


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