Q: What are the prime factors of the number 104,832?

 A: 2, 3, 7, 13

Why are those the prime factors of the number 104,832?

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 104,832

104,832
Factor Arrows
252,416
Factor Arrows
226,208
Factor Arrows
213,104
Factor Arrows
26,552
Factor Arrows
23,276
Factor Arrows
21,638
Factor Arrows
2819
Factor Arrows
3273
Factor Arrows
391
Factor Arrows
713

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, 7, 13

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 3 x 3 x 7 x 13 = 104,832

This can also be written as 27 x 32 x 71 x 131 = 104,832

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


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