Q: What are the prime factors of the number 331,475,274?

 A: 2, 3, 13, 83, 5689

Why are those the prime factors of the number 331,475,274?

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 331,475,274

331,475,274
Factor Arrows
2165,737,637
Factor Arrows
355,245,879
Factor Arrows
318,415,293
Factor Arrows
36,138,431
Factor Arrows
13472,187
Factor Arrows
835,689

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, 13, 83, 5689

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 13 x 83 x 5,689 = 331,475,274

This can also be written as 21 x 33 x 131 x 831 x 5,6891 = 331,475,274

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


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