Q: What are the prime factors of the number 688,734,735?

 A: 3, 5, 13, 53, 103, 647

Why are those the prime factors of the number 688,734,735?

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 688,734,735

688,734,735
Factor Arrows
3229,578,245
Factor Arrows
545,915,649
Factor Arrows
133,531,973
Factor Arrows
5366,641
Factor Arrows
103647

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, 13, 53, 103, 647

We can check our work by multiplying all of the prime factors together: 3 x 5 x 13 x 53 x 103 x 647 = 688,734,735

This can also be written as 31 x 51 x 131 x 531 x 1031 x 6471 = 688,734,735

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


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