Q: What are the prime factors of the number 204,111,440?

 A: 2, 5, 13, 31, 487

Why are those the prime factors of the number 204,111,440?

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 204,111,440

204,111,440
Factor Arrows
2102,055,720
Factor Arrows
251,027,860
Factor Arrows
225,513,930
Factor Arrows
212,756,965
Factor Arrows
52,551,393
Factor Arrows
13196,261
Factor Arrows
1315,097
Factor Arrows
31487

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, 13, 31, 487

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 13 x 13 x 31 x 487 = 204,111,440

This can also be written as 24 x 51 x 132 x 311 x 4871 = 204,111,440

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


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