Q: What are the prime factors of the number 331,828?

 A: 2, 7, 1693

Why are those the prime factors of the number 331,828?

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 331,828

331,828
Factor Arrows
2165,914
Factor Arrows
282,957
Factor Arrows
711,851
Factor Arrows
71,693

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, 7, 1693

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 7 x 1,693 = 331,828

This can also be written as 22 x 72 x 1,6931 = 331,828

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


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