Q: What are the prime factors of the number 331,021,332?

 A: 2, 3, 229, 40153

Why are those the prime factors of the number 331,021,332?

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 331,021,332

331,021,332
Factor Arrows
2165,510,666
Factor Arrows
282,755,333
Factor Arrows
327,585,111
Factor Arrows
39,195,037
Factor Arrows
22940,153

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, 3, 229, 40153

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 229 x 40,153 = 331,021,332

This can also be written as 22 x 32 x 2291 x 40,1531 = 331,021,332

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


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