Q: What are the prime factors of the number 204,133,120?

 A: 2, 5, 101, 1579

Why are those the prime factors of the number 204,133,120?

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 204,133,120

204,133,120
Factor Arrows
2102,066,560
Factor Arrows
251,033,280
Factor Arrows
225,516,640
Factor Arrows
212,758,320
Factor Arrows
26,379,160
Factor Arrows
23,189,580
Factor Arrows
21,594,790
Factor Arrows
2797,395
Factor Arrows
5159,479
Factor Arrows
1011,579

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, 5, 101, 1579

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 5 x 101 x 1,579 = 204,133,120

This can also be written as 28 x 51 x 1011 x 1,5791 = 204,133,120

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


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