Q: What are the prime factors of the number 31,204,316?

 A: 2, 11, 13, 17, 3209

Why are those the prime factors of the number 31,204,316?

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 31,204,316

31,204,316
Factor Arrows
215,602,158
Factor Arrows
27,801,079
Factor Arrows
11709,189
Factor Arrows
1354,553
Factor Arrows
173,209

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:

2, 11, 13, 17, 3209

We can check our work by multiplying all of the prime factors together: 2 x 2 x 11 x 13 x 17 x 3,209 = 31,204,316

This can also be written as 22 x 111 x 131 x 171 x 3,2091 = 31,204,316

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


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