Q: What are the prime factors of the number 731,744,320?

 A: 2, 5, 2286701

Why are those the prime factors of the number 731,744,320?

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 731,744,320

731,744,320
Factor Arrows
2365,872,160
Factor Arrows
2182,936,080
Factor Arrows
291,468,040
Factor Arrows
245,734,020
Factor Arrows
222,867,010
Factor Arrows
211,433,505
Factor Arrows
52,286,701

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, 2286701

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 5 x 2,286,701 = 731,744,320

This can also be written as 26 x 51 x 2,286,7011 = 731,744,320

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


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