Q: What are the prime factors of the number 378,757,875?

 A: 3, 5, 17, 19, 53, 59

Why are those the prime factors of the number 378,757,875?

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 378,757,875

378,757,875
Factor Arrows
3126,252,625
Factor Arrows
525,250,525
Factor Arrows
55,050,105
Factor Arrows
51,010,021
Factor Arrows
1759,413
Factor Arrows
193,127
Factor Arrows
5359

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:

3, 5, 17, 19, 53, 59

We can check our work by multiplying all of the prime factors together: 3 x 5 x 5 x 5 x 17 x 19 x 53 x 59 = 378,757,875

This can also be written as 31 x 53 x 171 x 191 x 531 x 591 = 378,757,875

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


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