Q: What are the prime factors of the number 722,425,473?

 A: 3, 7, 11, 16547

Why are those the prime factors of the number 722,425,473?

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 722,425,473

722,425,473
Factor Arrows
3240,808,491
Factor Arrows
380,269,497
Factor Arrows
326,756,499
Factor Arrows
38,918,833
Factor Arrows
71,274,119
Factor Arrows
7182,017
Factor Arrows
1116,547

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:

3, 7, 11, 16547

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 7 x 7 x 11 x 16,547 = 722,425,473

This can also be written as 34 x 72 x 111 x 16,5471 = 722,425,473

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


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