Q: What are the prime factors of the number 201,002,120?

 A: 2, 5, 11, 101, 4523

Why are those the prime factors of the number 201,002,120?

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 201,002,120

201,002,120
Factor Arrows
2100,501,060
Factor Arrows
250,250,530
Factor Arrows
225,125,265
Factor Arrows
55,025,053
Factor Arrows
11456,823
Factor Arrows
1014,523

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, 11, 101, 4523

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 11 x 101 x 4,523 = 201,002,120

This can also be written as 23 x 51 x 111 x 1011 x 4,5231 = 201,002,120

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


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