Q: What are the prime factors of the number 111,120,255?

 A: 3, 5, 91457

Why are those the prime factors of the number 111,120,255?

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 111,120,255

111,120,255
Factor Arrows
337,040,085
Factor Arrows
312,346,695
Factor Arrows
34,115,565
Factor Arrows
31,371,855
Factor Arrows
3457,285
Factor Arrows
591,457

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, 91457

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 5 x 91,457 = 111,120,255

This can also be written as 35 x 51 x 91,4571 = 111,120,255

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


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