Q: What are the prime factors of the number 202,521?

 A: 3, 11, 17, 19

Why are those the prime factors of the number 202,521?

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 202,521

202,521
Factor Arrows
367,507
Factor Arrows
116,137
Factor Arrows
17361
Factor Arrows
1919

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, 11, 17, 19

We can check our work by multiplying all of the prime factors together: 3 x 11 x 17 x 19 x 19 = 202,521

This can also be written as 31 x 111 x 171 x 192 = 202,521

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


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