Q: What are the prime factors of the number 331,033,010?

 A: 2, 5, 7, 11, 17, 19

Why are those the prime factors of the number 331,033,010?

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 331,033,010

331,033,010
Factor Arrows
2165,516,505
Factor Arrows
533,103,301
Factor Arrows
74,729,043
Factor Arrows
11429,913
Factor Arrows
1139,083
Factor Arrows
113,553
Factor Arrows
11323
Factor Arrows
1719

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, 5, 7, 11, 17, 19

We can check our work by multiplying all of the prime factors together: 2 x 5 x 7 x 11 x 11 x 11 x 11 x 17 x 19 = 331,033,010

This can also be written as 21 x 51 x 71 x 114 x 171 x 191 = 331,033,010

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


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