Q: What are the prime factors of the number 25,161,686?

 A: 2, 11, 571, 2003

Why are those the prime factors of the number 25,161,686?

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 25,161,686

25,161,686
Factor Arrows
212,580,843
Factor Arrows
111,143,713
Factor Arrows
5712,003

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, 571, 2003

We can check our work by multiplying all of the prime factors together: 2 x 11 x 571 x 2,003 = 25,161,686

This can also be written as 21 x 111 x 5711 x 2,0031 = 25,161,686

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


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