Q: What are the prime factors of the number 113,331,120?

 A: 2, 3, 5, 7, 23, 419

Why are those the prime factors of the number 113,331,120?

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 113,331,120

113,331,120
Factor Arrows
256,665,560
Factor Arrows
228,332,780
Factor Arrows
214,166,390
Factor Arrows
27,083,195
Factor Arrows
32,361,065
Factor Arrows
5472,213
Factor Arrows
767,459
Factor Arrows
79,637
Factor Arrows
23419

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, 7, 23, 419

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 7 x 7 x 23 x 419 = 113,331,120

This can also be written as 24 x 31 x 51 x 72 x 231 x 4191 = 113,331,120

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


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