Q: What are the prime factors of the number 11,857,470?

 A: 2, 3, 5, 89, 4441

Why are those the prime factors of the number 11,857,470?

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 11,857,470

11,857,470
Factor Arrows
25,928,735
Factor Arrows
31,976,245
Factor Arrows
5395,249
Factor Arrows
894,441

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, 89, 4441

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 89 x 4,441 = 11,857,470

This can also be written as 21 x 31 x 51 x 891 x 4,4411 = 11,857,470

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


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