Q: What are the prime factors of the number 722,526,224?

 A: 2, 7, 19, 263, 1291

Why are those the prime factors of the number 722,526,224?

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 722,526,224

722,526,224
Factor Arrows
2361,263,112
Factor Arrows
2180,631,556
Factor Arrows
290,315,778
Factor Arrows
245,157,889
Factor Arrows
76,451,127
Factor Arrows
19339,533
Factor Arrows
2631,291

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, 7, 19, 263, 1291

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 19 x 263 x 1,291 = 722,526,224

This can also be written as 24 x 71 x 191 x 2631 x 1,2911 = 722,526,224

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


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