Q: What are the prime factors of the number 867,541,820?

 A: 2, 5, 31, 1399261

Why are those the prime factors of the number 867,541,820?

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 867,541,820

867,541,820
Factor Arrows
2433,770,910
Factor Arrows
2216,885,455
Factor Arrows
543,377,091
Factor Arrows
311,399,261

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, 31, 1399261

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 31 x 1,399,261 = 867,541,820

This can also be written as 22 x 51 x 311 x 1,399,2611 = 867,541,820

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


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