Q: What are the prime factors of the number 20,806,704?

 A: 2, 3, 31, 59, 79

Why are those the prime factors of the number 20,806,704?

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 20,806,704

20,806,704
Factor Arrows
210,403,352
Factor Arrows
25,201,676
Factor Arrows
22,600,838
Factor Arrows
21,300,419
Factor Arrows
3433,473
Factor Arrows
3144,491
Factor Arrows
314,661
Factor Arrows
5979

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, 31, 59, 79

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 31 x 59 x 79 = 20,806,704

This can also be written as 24 x 32 x 311 x 591 x 791 = 20,806,704

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


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