Q: What are the prime factors of the number 11,451,888?

 A: 2, 3, 7, 541

Why are those the prime factors of the number 11,451,888?

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 11,451,888

11,451,888
Factor Arrows
25,725,944
Factor Arrows
22,862,972
Factor Arrows
21,431,486
Factor Arrows
2715,743
Factor Arrows
3238,581
Factor Arrows
379,527
Factor Arrows
326,509
Factor Arrows
73,787
Factor Arrows
7541

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, 7, 541

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 7 x 7 x 541 = 11,451,888

This can also be written as 24 x 33 x 72 x 5411 = 11,451,888

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


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