Q: What are the prime factors of the number 331,210?

 A: 2, 5, 11, 3011

Why are those the prime factors of the number 331,210?

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 331,210

331,210
Factor Arrows
2165,605
Factor Arrows
533,121
Factor Arrows
113,011

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, 5, 11, 3011

We can check our work by multiplying all of the prime factors together: 2 x 5 x 11 x 3,011 = 331,210

This can also be written as 21 x 51 x 111 x 3,0111 = 331,210

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


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