Q: What are the prime factors of the number 120,522,240?

 A: 2, 3, 5, 5231

Why are those the prime factors of the number 120,522,240?

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 120,522,240

120,522,240
Factor Arrows
260,261,120
Factor Arrows
230,130,560
Factor Arrows
215,065,280
Factor Arrows
27,532,640
Factor Arrows
23,766,320
Factor Arrows
21,883,160
Factor Arrows
2941,580
Factor Arrows
2470,790
Factor Arrows
2235,395
Factor Arrows
378,465
Factor Arrows
326,155
Factor Arrows
55,231

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, 5231

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 5 x 5,231 = 120,522,240

This can also be written as 29 x 32 x 51 x 5,2311 = 120,522,240

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


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