Q: What are the prime factors of the number 12,133,120?

 A: 2, 5, 9479

Why are those the prime factors of the number 12,133,120?

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 12,133,120

12,133,120
Factor Arrows
26,066,560
Factor Arrows
23,033,280
Factor Arrows
21,516,640
Factor Arrows
2758,320
Factor Arrows
2379,160
Factor Arrows
2189,580
Factor Arrows
294,790
Factor Arrows
247,395
Factor Arrows
59,479

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, 5, 9479

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 2 x 5 x 9,479 = 12,133,120

This can also be written as 28 x 51 x 9,4791 = 12,133,120

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


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