Q: What are the prime factors of the number 385,323,288?

 A: 2, 3, 7, 2293591

Why are those the prime factors of the number 385,323,288?

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 385,323,288

385,323,288
Factor Arrows
2192,661,644
Factor Arrows
296,330,822
Factor Arrows
248,165,411
Factor Arrows
316,055,137
Factor Arrows
72,293,591

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, 7, 2293591

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 7 x 2,293,591 = 385,323,288

This can also be written as 23 x 31 x 71 x 2,293,5911 = 385,323,288

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


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