Q: What are the prime factors of the number 222,115,625?

 A: 5, 17, 37, 113

Why are those the prime factors of the number 222,115,625?

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 222,115,625

222,115,625
Factor Arrows
544,423,125
Factor Arrows
58,884,625
Factor Arrows
51,776,925
Factor Arrows
5355,385
Factor Arrows
571,077
Factor Arrows
174,181
Factor Arrows
37113

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:

5, 17, 37, 113

We can check our work by multiplying all of the prime factors together: 5 x 5 x 5 x 5 x 5 x 17 x 37 x 113 = 222,115,625

This can also be written as 55 x 171 x 371 x 1131 = 222,115,625

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


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