Q: What are the prime factors of the number 113,231,220?

 A: 2, 3, 5, 17, 31, 3581

Why are those the prime factors of the number 113,231,220?

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 113,231,220

113,231,220
Factor Arrows
256,615,610
Factor Arrows
228,307,805
Factor Arrows
39,435,935
Factor Arrows
51,887,187
Factor Arrows
17111,011
Factor Arrows
313,581

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, 17, 31, 3581

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 17 x 31 x 3,581 = 113,231,220

This can also be written as 22 x 31 x 51 x 171 x 311 x 3,5811 = 113,231,220

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


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