Q: What are the prime factors of the number 820,096?

 A: 2, 43, 149

Why are those the prime factors of the number 820,096?

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 820,096

820,096
Factor Arrows
2410,048
Factor Arrows
2205,024
Factor Arrows
2102,512
Factor Arrows
251,256
Factor Arrows
225,628
Factor Arrows
212,814
Factor Arrows
26,407
Factor Arrows
43149

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, 149

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 43 x 149 = 820,096

This can also be written as 27 x 431 x 1491 = 820,096

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


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