Q: What are the prime factors of the number 20,643,524?

 A: 2, 11, 73, 6427

Why are those the prime factors of the number 20,643,524?

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 20,643,524

20,643,524
Factor Arrows
210,321,762
Factor Arrows
25,160,881
Factor Arrows
11469,171
Factor Arrows
736,427

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, 11, 73, 6427

We can check our work by multiplying all of the prime factors together: 2 x 2 x 11 x 73 x 6,427 = 20,643,524

This can also be written as 22 x 111 x 731 x 6,4271 = 20,643,524

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


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