Q: What are the prime factors of the number 331,504?

 A: 2, 20719

Why are those the prime factors of the number 331,504?

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 331,504

331,504
Factor Arrows
2165,752
Factor Arrows
282,876
Factor Arrows
241,438
Factor Arrows
220,719

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, 20719

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 20,719 = 331,504

This can also be written as 24 x 20,7191 = 331,504

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


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