Q: What are the prime factors of the number 238,716,380?

 A: 2, 5, 7, 17, 19, 5279

Why are those the prime factors of the number 238,716,380?

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 238,716,380

238,716,380
Factor Arrows
2119,358,190
Factor Arrows
259,679,095
Factor Arrows
511,935,819
Factor Arrows
71,705,117
Factor Arrows
17100,301
Factor Arrows
195,279

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, 17, 19, 5279

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 7 x 17 x 19 x 5,279 = 238,716,380

This can also be written as 22 x 51 x 71 x 171 x 191 x 5,2791 = 238,716,380

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


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