Q: What are the prime factors of the number 111,542,208?

 A: 2, 3, 569, 1021

Why are those the prime factors of the number 111,542,208?

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 111,542,208

111,542,208
Factor Arrows
255,771,104
Factor Arrows
227,885,552
Factor Arrows
213,942,776
Factor Arrows
26,971,388
Factor Arrows
23,485,694
Factor Arrows
21,742,847
Factor Arrows
3580,949
Factor Arrows
5691,021

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, 569, 1021

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 3 x 569 x 1,021 = 111,542,208

This can also be written as 26 x 31 x 5691 x 1,0211 = 111,542,208

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


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