Q: What are the prime factors of the number 8,068,720?

 A: 2, 5, 11, 53, 173

Why are those the prime factors of the number 8,068,720?

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 8,068,720

8,068,720
Factor Arrows
24,034,360
Factor Arrows
22,017,180
Factor Arrows
21,008,590
Factor Arrows
2504,295
Factor Arrows
5100,859
Factor Arrows
119,169
Factor Arrows
53173

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, 11, 53, 173

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 11 x 53 x 173 = 8,068,720

This can also be written as 24 x 51 x 111 x 531 x 1731 = 8,068,720

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


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