Q: What are the prime factors of the number 310,223,125?

 A: 5, 61, 79, 103

Why are those the prime factors of the number 310,223,125?

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 310,223,125

310,223,125
Factor Arrows
562,044,625
Factor Arrows
512,408,925
Factor Arrows
52,481,785
Factor Arrows
5496,357
Factor Arrows
618,137
Factor Arrows
79103

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, 61, 79, 103

We can check our work by multiplying all of the prime factors together: 5 x 5 x 5 x 5 x 61 x 79 x 103 = 310,223,125

This can also be written as 54 x 611 x 791 x 1031 = 310,223,125

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


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