Q: What are the prime factors of the number 331,208,703?

 A: 3, 7, 19, 92233

Why are those the prime factors of the number 331,208,703?

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 331,208,703

331,208,703
Factor Arrows
3110,402,901
Factor Arrows
336,800,967
Factor Arrows
312,266,989
Factor Arrows
71,752,427
Factor Arrows
1992,233

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:

3, 7, 19, 92233

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 7 x 19 x 92,233 = 331,208,703

This can also be written as 33 x 71 x 191 x 92,2331 = 331,208,703

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


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