Q: What are the prime factors of the number 21,133,606?

 A: 2, 13, 79, 10289

Why are those the prime factors of the number 21,133,606?

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 21,133,606

21,133,606
Factor Arrows
210,566,803
Factor Arrows
13812,831
Factor Arrows
7910,289

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, 13, 79, 10289

We can check our work by multiplying all of the prime factors together: 2 x 13 x 79 x 10,289 = 21,133,606

This can also be written as 21 x 131 x 791 x 10,2891 = 21,133,606

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


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