Q: What are the prime factors of the number 11,047,872?

 A: 2, 3, 11, 5231

Why are those the prime factors of the number 11,047,872?

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 11,047,872

11,047,872
Factor Arrows
25,523,936
Factor Arrows
22,761,968
Factor Arrows
21,380,984
Factor Arrows
2690,492
Factor Arrows
2345,246
Factor Arrows
2172,623
Factor Arrows
357,541
Factor Arrows
115,231

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, 11, 5231

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 3 x 11 x 5,231 = 11,047,872

This can also be written as 26 x 31 x 111 x 5,2311 = 11,047,872

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


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