Q: What are the prime factors of the number 331,101,040?

 A: 2, 5, 239, 17317

Why are those the prime factors of the number 331,101,040?

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 331,101,040

331,101,040
Factor Arrows
2165,550,520
Factor Arrows
282,775,260
Factor Arrows
241,387,630
Factor Arrows
220,693,815
Factor Arrows
54,138,763
Factor Arrows
23917,317

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, 239, 17317

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 239 x 17,317 = 331,101,040

This can also be written as 24 x 51 x 2391 x 17,3171 = 331,101,040

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


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