Q: What are the prime factors of the number 120,132,999?

 A: 3, 7, 17, 223, 503

Why are those the prime factors of the number 120,132,999?

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 120,132,999

120,132,999
Factor Arrows
340,044,333
Factor Arrows
313,348,111
Factor Arrows
71,906,873
Factor Arrows
17112,169
Factor Arrows
223503

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, 7, 17, 223, 503

We can check our work by multiplying all of the prime factors together: 3 x 3 x 7 x 17 x 223 x 503 = 120,132,999

This can also be written as 32 x 71 x 171 x 2231 x 5031 = 120,132,999

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


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