Q: What are the prime factors of the number 202,120,002?

 A: 2, 3, 7, 76387

Why are those the prime factors of the number 202,120,002?

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 202,120,002

202,120,002
Factor Arrows
2101,060,001
Factor Arrows
333,686,667
Factor Arrows
311,228,889
Factor Arrows
33,742,963
Factor Arrows
7534,709
Factor Arrows
776,387

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, 76387

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 7 x 7 x 76,387 = 202,120,002

This can also be written as 21 x 33 x 72 x 76,3871 = 202,120,002

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


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