Q: What are the prime factors of the number 113,411,200?

 A: 2, 5, 7, 61, 83

Why are those the prime factors of the number 113,411,200?

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 113,411,200

113,411,200
Factor Arrows
256,705,600
Factor Arrows
228,352,800
Factor Arrows
214,176,400
Factor Arrows
27,088,200
Factor Arrows
23,544,100
Factor Arrows
21,772,050
Factor Arrows
2886,025
Factor Arrows
5177,205
Factor Arrows
535,441
Factor Arrows
75,063
Factor Arrows
6183

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, 7, 61, 83

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 2 x 5 x 5 x 7 x 61 x 83 = 113,411,200

This can also be written as 27 x 52 x 71 x 611 x 831 = 113,411,200

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


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