Q: What are the prime factors of the number 20,210,203?

 A: 13, 9199

Why are those the prime factors of the number 20,210,203?

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 20,210,203

20,210,203
Factor Arrows
131,554,631
Factor Arrows
13119,587
Factor Arrows
139,199

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:

13, 9199

We can check our work by multiplying all of the prime factors together: 13 x 13 x 13 x 9,199 = 20,210,203

This can also be written as 133 x 9,1991 = 20,210,203

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


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