Q: What are the prime factors of the number 388,695,027?

 A: 3, 7, 19, 37, 113, 233

Why are those the prime factors of the number 388,695,027?

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 388,695,027

388,695,027
Factor Arrows
3129,565,009
Factor Arrows
718,509,287
Factor Arrows
19974,173
Factor Arrows
3726,329
Factor Arrows
113233

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, 19, 37, 113, 233

We can check our work by multiplying all of the prime factors together: 3 x 7 x 19 x 37 x 113 x 233 = 388,695,027

This can also be written as 31 x 71 x 191 x 371 x 1131 x 2331 = 388,695,027

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


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