Q: What are the prime factors of the number 25,161,250?

 A: 2, 5, 20129

Why are those the prime factors of the number 25,161,250?

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 25,161,250

25,161,250
Factor Arrows
212,580,625
Factor Arrows
52,516,125
Factor Arrows
5503,225
Factor Arrows
5100,645
Factor Arrows
520,129

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, 20129

We can check our work by multiplying all of the prime factors together: 2 x 5 x 5 x 5 x 5 x 20,129 = 25,161,250

This can also be written as 21 x 54 x 20,1291 = 25,161,250

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


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