Q: What are the prime factors of the number 221,202,241?

 A: 13, 421, 3109

Why are those the prime factors of the number 221,202,241?

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 221,202,241

221,202,241
Factor Arrows
1317,015,557
Factor Arrows
131,308,889
Factor Arrows
4213,109

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, 421, 3109

We can check our work by multiplying all of the prime factors together: 13 x 13 x 421 x 3,109 = 221,202,241

This can also be written as 132 x 4211 x 3,1091 = 221,202,241

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


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