Q: What are the prime factors of the number 328,864?

 A: 2, 43, 239

Why are those the prime factors of the number 328,864?

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 328,864

328,864
Factor Arrows
2164,432
Factor Arrows
282,216
Factor Arrows
241,108
Factor Arrows
220,554
Factor Arrows
210,277
Factor Arrows
43239

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, 43, 239

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 43 x 239 = 328,864

This can also be written as 25 x 431 x 2391 = 328,864

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


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