Q: What are the prime factors of the number 117,270,720?

 A: 2, 3, 5, 7, 277

Why are those the prime factors of the number 117,270,720?

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 117,270,720

117,270,720
Factor Arrows
258,635,360
Factor Arrows
229,317,680
Factor Arrows
214,658,840
Factor Arrows
27,329,420
Factor Arrows
23,664,710
Factor Arrows
21,832,355
Factor Arrows
3610,785
Factor Arrows
3203,595
Factor Arrows
367,865
Factor Arrows
513,573
Factor Arrows
71,939
Factor Arrows
7277

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, 5, 7, 277

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 3 x 3 x 5 x 7 x 7 x 277 = 117,270,720

This can also be written as 26 x 33 x 51 x 72 x 2771 = 117,270,720

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


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