Q: What are the prime factors of the number 111,125?

 A: 5, 7, 127

Why are those the prime factors of the number 111,125?

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 111,125

111,125
Factor Arrows
522,225
Factor Arrows
54,445
Factor Arrows
5889
Factor Arrows
7127

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, 7, 127

We can check our work by multiplying all of the prime factors together: 5 x 5 x 5 x 7 x 127 = 111,125

This can also be written as 53 x 71 x 1271 = 111,125

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


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