Q: What are the prime factors of the number 647,536?

 A: 2, 40471

Why are those the prime factors of the number 647,536?

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 647,536

647,536
Factor Arrows
2323,768
Factor Arrows
2161,884
Factor Arrows
280,942
Factor Arrows
240,471

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, 40471

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 40,471 = 647,536

This can also be written as 24 x 40,4711 = 647,536

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


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