Q: What are the prime factors of the number 25,205,013?

 A: 3, 311173

Why are those the prime factors of the number 25,205,013?

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 25,205,013

25,205,013
Factor Arrows
38,401,671
Factor Arrows
32,800,557
Factor Arrows
3933,519
Factor Arrows
3311,173

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:

3, 311173

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 311,173 = 25,205,013

This can also be written as 34 x 311,1731 = 25,205,013

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


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