Q: What are the prime factors of the number 121,431,204?

 A: 2, 3, 17, 19, 59

Why are those the prime factors of the number 121,431,204?

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 121,431,204

121,431,204
Factor Arrows
260,715,602
Factor Arrows
230,357,801
Factor Arrows
310,119,267
Factor Arrows
33,373,089
Factor Arrows
31,124,363
Factor Arrows
1766,139
Factor Arrows
193,481
Factor Arrows
5959

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, 17, 19, 59

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 17 x 19 x 59 x 59 = 121,431,204

This can also be written as 22 x 33 x 171 x 191 x 592 = 121,431,204

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


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