Q: What are the prime factors of the number 647,362,268?

 A: 2, 7, 4729, 4889

Why are those the prime factors of the number 647,362,268?

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 647,362,268

647,362,268
Factor Arrows
2323,681,134
Factor Arrows
2161,840,567
Factor Arrows
723,120,081
Factor Arrows
4,7294,889

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, 4729, 4889

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 4,729 x 4,889 = 647,362,268

This can also be written as 22 x 71 x 4,7291 x 4,8891 = 647,362,268

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


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