Q: What are the prime factors of the number 111,326,805?

 A: 3, 5, 59, 1553

Why are those the prime factors of the number 111,326,805?

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 111,326,805

111,326,805
Factor Arrows
337,108,935
Factor Arrows
312,369,645
Factor Arrows
34,123,215
Factor Arrows
31,374,405
Factor Arrows
3458,135
Factor Arrows
591,627
Factor Arrows
591,553

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, 59, 1553

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 59 x 1,553 = 111,326,805

This can also be written as 35 x 51 x 591 x 1,5531 = 111,326,805

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


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