Q: What are the prime factors of the number 381,930?

 A: 2, 3, 5, 29, 439

Why are those the prime factors of the number 381,930?

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 381,930

381,930
Factor Arrows
2190,965
Factor Arrows
363,655
Factor Arrows
512,731
Factor Arrows
29439

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, 29, 439

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 29 x 439 = 381,930

This can also be written as 21 x 31 x 51 x 291 x 4391 = 381,930

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


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