Q: What are the prime factors of the number 16,896?

 A: 2, 3, 11

Why are those the prime factors of the number 16,896?

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 16,896

16,896
Factor Arrows
28,448
Factor Arrows
24,224
Factor Arrows
22,112
Factor Arrows
21,056
Factor Arrows
2528
Factor Arrows
2264
Factor Arrows
2132
Factor Arrows
266
Factor Arrows
233
Factor Arrows
311

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, 11

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 11 = 16,896

This can also be written as 29 x 31 x 111 = 16,896

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


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