Q: What are the prime factors of the number 11,013,120?

 A: 2, 3, 5, 239

Why are those the prime factors of the number 11,013,120?

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 11,013,120

11,013,120
Factor Arrows
25,506,560
Factor Arrows
22,753,280
Factor Arrows
21,376,640
Factor Arrows
2688,320
Factor Arrows
2344,160
Factor Arrows
2172,080
Factor Arrows
286,040
Factor Arrows
243,020
Factor Arrows
221,510
Factor Arrows
210,755
Factor Arrows
33,585
Factor Arrows
31,195
Factor Arrows
5239

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, 239

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 2 x 2 x 3 x 3 x 5 x 239 = 11,013,120

This can also be written as 210 x 32 x 51 x 2391 = 11,013,120

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


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