Q: What are the prime factors of the number 819,896?

 A: 2, 7, 11

Why are those the prime factors of the number 819,896?

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 819,896

819,896
Factor Arrows
2409,948
Factor Arrows
2204,974
Factor Arrows
2102,487
Factor Arrows
714,641
Factor Arrows
111,331
Factor Arrows
11121
Factor Arrows
1111

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, 7, 11

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 11 x 11 x 11 x 11 = 819,896

This can also be written as 23 x 71 x 114 = 819,896

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


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