Q: What are the prime factors of the number 687,084,832?

 A: 2, 7, 827, 3709

Why are those the prime factors of the number 687,084,832?

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 687,084,832

687,084,832
Factor Arrows
2343,542,416
Factor Arrows
2171,771,208
Factor Arrows
285,885,604
Factor Arrows
242,942,802
Factor Arrows
221,471,401
Factor Arrows
73,067,343
Factor Arrows
8273,709

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, 7, 827, 3709

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 827 x 3,709 = 687,084,832

This can also be written as 25 x 71 x 8271 x 3,7091 = 687,084,832

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


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