Q: What are the prime factors of the number 120,751,200?

 A: 2, 3, 5, 31, 541

Why are those the prime factors of the number 120,751,200?

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 120,751,200

120,751,200
Factor Arrows
260,375,600
Factor Arrows
230,187,800
Factor Arrows
215,093,900
Factor Arrows
27,546,950
Factor Arrows
23,773,475
Factor Arrows
31,257,825
Factor Arrows
3419,275
Factor Arrows
583,855
Factor Arrows
516,771
Factor Arrows
31541

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, 5, 31, 541

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 5 x 5 x 31 x 541 = 120,751,200

This can also be written as 25 x 32 x 52 x 311 x 5411 = 120,751,200

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


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