Q: What are the prime factors of the number 401,522,109?

 A: 3, 23, 113, 2239

Why are those the prime factors of the number 401,522,109?

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 401,522,109

401,522,109
Factor Arrows
3133,840,703
Factor Arrows
235,819,161
Factor Arrows
23253,007
Factor Arrows
1132,239

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, 23, 113, 2239

We can check our work by multiplying all of the prime factors together: 3 x 23 x 23 x 113 x 2,239 = 401,522,109

This can also be written as 31 x 232 x 1131 x 2,2391 = 401,522,109

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


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