Q: What are the prime factors of the number 431,556,600?

 A: 2, 3, 5, 43, 389

Why are those the prime factors of the number 431,556,600?

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 431,556,600

431,556,600
Factor Arrows
2215,778,300
Factor Arrows
2107,889,150
Factor Arrows
253,944,575
Factor Arrows
317,981,525
Factor Arrows
53,596,305
Factor Arrows
5719,261
Factor Arrows
4316,727
Factor Arrows
43389

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, 3, 5, 43, 389

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 5 x 43 x 43 x 389 = 431,556,600

This can also be written as 23 x 31 x 52 x 432 x 3891 = 431,556,600

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


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