Q: What are the prime factors of the number 329,888?

 A: 2, 13, 61

Why are those the prime factors of the number 329,888?

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 329,888

329,888
Factor Arrows
2164,944
Factor Arrows
282,472
Factor Arrows
241,236
Factor Arrows
220,618
Factor Arrows
210,309
Factor Arrows
13793
Factor Arrows
1361

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, 13, 61

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 13 x 13 x 61 = 329,888

This can also be written as 25 x 132 x 611 = 329,888

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


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