Q: What are the prime factors of the number 724,305,608?

 A: 2, 13, 211, 2539

Why are those the prime factors of the number 724,305,608?

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 724,305,608

724,305,608
Factor Arrows
2362,152,804
Factor Arrows
2181,076,402
Factor Arrows
290,538,201
Factor Arrows
136,964,477
Factor Arrows
13535,729
Factor Arrows
2112,539

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, 211, 2539

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 13 x 13 x 211 x 2,539 = 724,305,608

This can also be written as 23 x 132 x 2111 x 2,5391 = 724,305,608

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


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