Q: What are the prime factors of the number 822,072,160?

 A: 2, 5, 7, 13, 131, 431

Why are those the prime factors of the number 822,072,160?

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 822,072,160

822,072,160
Factor Arrows
2411,036,080
Factor Arrows
2205,518,040
Factor Arrows
2102,759,020
Factor Arrows
251,379,510
Factor Arrows
225,689,755
Factor Arrows
55,137,951
Factor Arrows
7733,993
Factor Arrows
1356,461
Factor Arrows
131431

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, 5, 7, 13, 131, 431

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 7 x 13 x 131 x 431 = 822,072,160

This can also be written as 25 x 51 x 71 x 131 x 1311 x 4311 = 822,072,160

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


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