Q: What are the prime factors of the number 82,678,080?

 A: 2, 3, 5, 71, 1213

Why are those the prime factors of the number 82,678,080?

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 82,678,080

82,678,080
Factor Arrows
241,339,040
Factor Arrows
220,669,520
Factor Arrows
210,334,760
Factor Arrows
25,167,380
Factor Arrows
22,583,690
Factor Arrows
21,291,845
Factor Arrows
3430,615
Factor Arrows
586,123
Factor Arrows
711,213

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, 5, 71, 1213

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 3 x 5 x 71 x 1,213 = 82,678,080

This can also be written as 26 x 31 x 51 x 711 x 1,2131 = 82,678,080

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


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