Q: What are the prime factors of the number 31,025,225?

 A: 5, 7, 11, 71, 227

Why are those the prime factors of the number 31,025,225?

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 31,025,225

31,025,225
Factor Arrows
56,205,045
Factor Arrows
51,241,009
Factor Arrows
7177,287
Factor Arrows
1116,117
Factor Arrows
71227

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, 7, 11, 71, 227

We can check our work by multiplying all of the prime factors together: 5 x 5 x 7 x 11 x 71 x 227 = 31,025,225

This can also be written as 52 x 71 x 111 x 711 x 2271 = 31,025,225

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


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