Q: What are the prime factors of the number 388,574,704?

 A: 2, 7, 439, 1129

Why are those the prime factors of the number 388,574,704?

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 388,574,704

388,574,704
Factor Arrows
2194,287,352
Factor Arrows
297,143,676
Factor Arrows
248,571,838
Factor Arrows
224,285,919
Factor Arrows
73,469,417
Factor Arrows
7495,631
Factor Arrows
4391,129

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, 439, 1129

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 7 x 439 x 1,129 = 388,574,704

This can also be written as 24 x 72 x 4391 x 1,1291 = 388,574,704

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


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