Q: What are the prime factors of the number 205,442,000?

 A: 2, 5, 139, 739

Why are those the prime factors of the number 205,442,000?

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 205,442,000

205,442,000
Factor Arrows
2102,721,000
Factor Arrows
251,360,500
Factor Arrows
225,680,250
Factor Arrows
212,840,125
Factor Arrows
52,568,025
Factor Arrows
5513,605
Factor Arrows
5102,721
Factor Arrows
139739

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, 139, 739

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 5 x 5 x 139 x 739 = 205,442,000

This can also be written as 24 x 53 x 1391 x 7391 = 205,442,000

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


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