Q: What are the prime factors of the number 722,747,584?

 A: 2, 13, 23, 179, 211

Why are those the prime factors of the number 722,747,584?

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 722,747,584

722,747,584
Factor Arrows
2361,373,792
Factor Arrows
2180,686,896
Factor Arrows
290,343,448
Factor Arrows
245,171,724
Factor Arrows
222,585,862
Factor Arrows
211,292,931
Factor Arrows
13868,687
Factor Arrows
2337,769
Factor Arrows
179211

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, 13, 23, 179, 211

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 13 x 23 x 179 x 211 = 722,747,584

This can also be written as 26 x 131 x 231 x 1791 x 2111 = 722,747,584

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


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