Q: What are the prime factors of the number 204,140,020?

 A: 2, 5, 7, 461, 3163

Why are those the prime factors of the number 204,140,020?

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 204,140,020

204,140,020
Factor Arrows
2102,070,010
Factor Arrows
251,035,005
Factor Arrows
510,207,001
Factor Arrows
71,458,143
Factor Arrows
4613,163

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, 7, 461, 3163

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 7 x 461 x 3,163 = 204,140,020

This can also be written as 22 x 51 x 71 x 4611 x 3,1631 = 204,140,020

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


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