Q: What are the prime factors of the number 189,856?

 A: 2, 17, 349

Why are those the prime factors of the number 189,856?

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 189,856

189,856
Factor Arrows
294,928
Factor Arrows
247,464
Factor Arrows
223,732
Factor Arrows
211,866
Factor Arrows
25,933
Factor Arrows
17349

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, 17, 349

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 17 x 349 = 189,856

This can also be written as 25 x 171 x 3491 = 189,856

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


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