Q: What are the prime factors of the number 122,513,125?

 A: 5, 7, 41, 683

Why are those the prime factors of the number 122,513,125?

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 122,513,125

122,513,125
Factor Arrows
524,502,625
Factor Arrows
54,900,525
Factor Arrows
5980,105
Factor Arrows
5196,021
Factor Arrows
728,003
Factor Arrows
41683

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, 41, 683

We can check our work by multiplying all of the prime factors together: 5 x 5 x 5 x 5 x 7 x 41 x 683 = 122,513,125

This can also be written as 54 x 71 x 411 x 6831 = 122,513,125

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


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