Q: What are the prime factors of the number 726,425,538?

 A: 2, 3, 17, 7121819

Why are those the prime factors of the number 726,425,538?

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 726,425,538

726,425,538
Factor Arrows
2363,212,769
Factor Arrows
3121,070,923
Factor Arrows
177,121,819

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, 3, 17, 7121819

We can check our work by multiplying all of the prime factors together: 2 x 3 x 17 x 7,121,819 = 726,425,538

This can also be written as 21 x 31 x 171 x 7,121,8191 = 726,425,538

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


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