Q: What are the prime factors of the number 201,210,198?

 A: 2, 3, 7, 17, 281807

Why are those the prime factors of the number 201,210,198?

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 201,210,198

201,210,198
Factor Arrows
2100,605,099
Factor Arrows
333,535,033
Factor Arrows
74,790,719
Factor Arrows
17281,807

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, 7, 17, 281807

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 17 x 281,807 = 201,210,198

This can also be written as 21 x 31 x 71 x 171 x 281,8071 = 201,210,198

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


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