Q: What are the prime factors of the number 822,807,168?

 A: 2, 3, 67, 31981

Why are those the prime factors of the number 822,807,168?

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 822,807,168

822,807,168
Factor Arrows
2411,403,584
Factor Arrows
2205,701,792
Factor Arrows
2102,850,896
Factor Arrows
251,425,448
Factor Arrows
225,712,724
Factor Arrows
212,856,362
Factor Arrows
26,428,181
Factor Arrows
32,142,727
Factor Arrows
6731,981

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, 67, 31981

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 67 x 31,981 = 822,807,168

This can also be written as 27 x 31 x 671 x 31,9811 = 822,807,168

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


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