Q: What are the prime factors of the number 431,112,304?

 A: 2, 7, 67, 73, 787

Why are those the prime factors of the number 431,112,304?

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 431,112,304

431,112,304
Factor Arrows
2215,556,152
Factor Arrows
2107,778,076
Factor Arrows
253,889,038
Factor Arrows
226,944,519
Factor Arrows
73,849,217
Factor Arrows
6757,451
Factor Arrows
73787

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, 67, 73, 787

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 67 x 73 x 787 = 431,112,304

This can also be written as 24 x 71 x 671 x 731 x 7871 = 431,112,304

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


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