Q: What are the prime factors of the number 210,221,325?

 A: 3, 5, 103813

Why are those the prime factors of the number 210,221,325?

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 210,221,325

210,221,325
Factor Arrows
370,073,775
Factor Arrows
323,357,925
Factor Arrows
37,785,975
Factor Arrows
32,595,325
Factor Arrows
5519,065
Factor Arrows
5103,813

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:

3, 5, 103813

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 5 x 5 x 103,813 = 210,221,325

This can also be written as 34 x 52 x 103,8131 = 210,221,325

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


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