Q: What are the prime factors of the number 20,910,110?

 A: 2, 5, 13, 239, 673

Why are those the prime factors of the number 20,910,110?

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 20,910,110

20,910,110
Factor Arrows
210,455,055
Factor Arrows
52,091,011
Factor Arrows
13160,847
Factor Arrows
239673

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, 5, 13, 239, 673

We can check our work by multiplying all of the prime factors together: 2 x 5 x 13 x 239 x 673 = 20,910,110

This can also be written as 21 x 51 x 131 x 2391 x 6731 = 20,910,110

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


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