Q: What are the prime factors of the number 20,231,244?

 A: 2, 3, 11, 47, 1087

Why are those the prime factors of the number 20,231,244?

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 20,231,244

20,231,244
Factor Arrows
210,115,622
Factor Arrows
25,057,811
Factor Arrows
31,685,937
Factor Arrows
3561,979
Factor Arrows
1151,089
Factor Arrows
471,087

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, 3, 11, 47, 1087

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 11 x 47 x 1,087 = 20,231,244

This can also be written as 22 x 32 x 111 x 471 x 1,0871 = 20,231,244

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


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