Q: What are the prime factors of the number 12,331,125?

 A: 3, 5, 97, 113

Why are those the prime factors of the number 12,331,125?

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 12,331,125

12,331,125
Factor Arrows
34,110,375
Factor Arrows
31,370,125
Factor Arrows
5274,025
Factor Arrows
554,805
Factor Arrows
510,961
Factor Arrows
97113

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, 97, 113

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 5 x 5 x 97 x 113 = 12,331,125

This can also be written as 32 x 53 x 971 x 1131 = 12,331,125

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


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