Q: What are the prime factors of the number 11,055,440?

 A: 2, 5, 11, 17, 739

Why are those the prime factors of the number 11,055,440?

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 11,055,440

11,055,440
Factor Arrows
25,527,720
Factor Arrows
22,763,860
Factor Arrows
21,381,930
Factor Arrows
2690,965
Factor Arrows
5138,193
Factor Arrows
1112,563
Factor Arrows
17739

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, 11, 17, 739

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 11 x 17 x 739 = 11,055,440

This can also be written as 24 x 51 x 111 x 171 x 7391 = 11,055,440

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


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