Q: What are the prime factors of the number 120,521,104?

 A: 2, 11, 19, 23, 1567

Why are those the prime factors of the number 120,521,104?

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 120,521,104

120,521,104
Factor Arrows
260,260,552
Factor Arrows
230,130,276
Factor Arrows
215,065,138
Factor Arrows
27,532,569
Factor Arrows
11684,779
Factor Arrows
1936,041
Factor Arrows
231,567

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, 11, 19, 23, 1567

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 11 x 19 x 23 x 1,567 = 120,521,104

This can also be written as 24 x 111 x 191 x 231 x 1,5671 = 120,521,104

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


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