Q: What are the prime factors of the number 113,301,405?

 A: 3, 5, 7, 29, 79, 157

Why are those the prime factors of the number 113,301,405?

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 113,301,405

113,301,405
Factor Arrows
337,767,135
Factor Arrows
312,589,045
Factor Arrows
52,517,809
Factor Arrows
7359,687
Factor Arrows
2912,403
Factor Arrows
79157

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:

3, 5, 7, 29, 79, 157

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 7 x 29 x 79 x 157 = 113,301,405

This can also be written as 32 x 51 x 71 x 291 x 791 x 1571 = 113,301,405

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


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