Q: What are the prime factors of the number 120,332,032?

 A: 2, 47, 73, 137

Why are those the prime factors of the number 120,332,032?

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 120,332,032

120,332,032
Factor Arrows
260,166,016
Factor Arrows
230,083,008
Factor Arrows
215,041,504
Factor Arrows
27,520,752
Factor Arrows
23,760,376
Factor Arrows
21,880,188
Factor Arrows
2940,094
Factor Arrows
2470,047
Factor Arrows
4710,001
Factor Arrows
73137

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, 47, 73, 137

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 47 x 73 x 137 = 120,332,032

This can also be written as 28 x 471 x 731 x 1371 = 120,332,032

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


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