Q: What are the prime factors of the number 731,441,625?

 A: 3, 5, 29, 103, 653

Why are those the prime factors of the number 731,441,625?

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 731,441,625

731,441,625
Factor Arrows
3243,813,875
Factor Arrows
548,762,775
Factor Arrows
59,752,555
Factor Arrows
51,950,511
Factor Arrows
2967,259
Factor Arrows
103653

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, 5, 29, 103, 653

We can check our work by multiplying all of the prime factors together: 3 x 5 x 5 x 5 x 29 x 103 x 653 = 731,441,625

This can also be written as 31 x 53 x 291 x 1031 x 6531 = 731,441,625

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


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