Q: What are the prime factors of the number 25,581,946?

 A: 2, 13, 457, 2153

Why are those the prime factors of the number 25,581,946?

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 25,581,946

25,581,946
Factor Arrows
212,790,973
Factor Arrows
13983,921
Factor Arrows
4572,153

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, 13, 457, 2153

We can check our work by multiplying all of the prime factors together: 2 x 13 x 457 x 2,153 = 25,581,946

This can also be written as 21 x 131 x 4571 x 2,1531 = 25,581,946

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


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