Q: What are the prime factors of the number 20,763,821?

 A: 13, 179, 8923

Why are those the prime factors of the number 20,763,821?

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 20,763,821

20,763,821
Factor Arrows
131,597,217
Factor Arrows
1798,923

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, 179, 8923

We can check our work by multiplying all of the prime factors together: 13 x 179 x 8,923 = 20,763,821

This can also be written as 131 x 1791 x 8,9231 = 20,763,821

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


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