Q: What are the prime factors of the number 231,808?

 A: 2, 1811

Why are those the prime factors of the number 231,808?

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 231,808

231,808
Factor Arrows
2115,904
Factor Arrows
257,952
Factor Arrows
228,976
Factor Arrows
214,488
Factor Arrows
27,244
Factor Arrows
23,622
Factor Arrows
21,811

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, 1811

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 1,811 = 231,808

This can also be written as 27 x 1,8111 = 231,808

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


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