Q: What are the prime factors of the number 7,885,625?

 A: 5, 11, 31, 37

Why are those the prime factors of the number 7,885,625?

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 7,885,625

7,885,625
Factor Arrows
51,577,125
Factor Arrows
5315,425
Factor Arrows
563,085
Factor Arrows
512,617
Factor Arrows
111,147
Factor Arrows
3137

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:

5, 11, 31, 37

We can check our work by multiplying all of the prime factors together: 5 x 5 x 5 x 5 x 11 x 31 x 37 = 7,885,625

This can also be written as 54 x 111 x 311 x 371 = 7,885,625

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


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