Q: What are the prime factors of the number 120,330,312?

 A: 2, 3, 131, 38273

Why are those the prime factors of the number 120,330,312?

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 120,330,312

120,330,312
Factor Arrows
260,165,156
Factor Arrows
230,082,578
Factor Arrows
215,041,289
Factor Arrows
35,013,763
Factor Arrows
13138,273

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:

2, 3, 131, 38273

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 131 x 38,273 = 120,330,312

This can also be written as 23 x 31 x 1311 x 38,2731 = 120,330,312

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


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