Q: What are the prime factors of the number 26,321,625?

 A: 3, 5, 11, 709

Why are those the prime factors of the number 26,321,625?

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 26,321,625

26,321,625
Factor Arrows
38,773,875
Factor Arrows
32,924,625
Factor Arrows
3974,875
Factor Arrows
5194,975
Factor Arrows
538,995
Factor Arrows
57,799
Factor Arrows
11709

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, 5, 11, 709

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 5 x 5 x 11 x 709 = 26,321,625

This can also be written as 33 x 53 x 111 x 7091 = 26,321,625

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


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