Q: What are the prime factors of the number 328,257,819?

 A: 3, 12157697

Why are those the prime factors of the number 328,257,819?

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 328,257,819

328,257,819
Factor Arrows
3109,419,273
Factor Arrows
336,473,091
Factor Arrows
312,157,697

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, 12157697

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 12,157,697 = 328,257,819

This can also be written as 33 x 12,157,6971 = 328,257,819

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


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