Q: What are the prime factors of the number 331,234,110?

 A: 2, 3, 5, 191, 2141

Why are those the prime factors of the number 331,234,110?

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 331,234,110

331,234,110
Factor Arrows
2165,617,055
Factor Arrows
355,205,685
Factor Arrows
318,401,895
Factor Arrows
36,133,965
Factor Arrows
32,044,655
Factor Arrows
5408,931
Factor Arrows
1912,141

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, 5, 191, 2141

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 5 x 191 x 2,141 = 331,234,110

This can also be written as 21 x 34 x 51 x 1911 x 2,1411 = 331,234,110

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


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