Q: What are the prime factors of the number 647,244?

 A: 2, 3, 13, 461

Why are those the prime factors of the number 647,244?

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 647,244

647,244
Factor Arrows
2323,622
Factor Arrows
2161,811
Factor Arrows
353,937
Factor Arrows
317,979
Factor Arrows
35,993
Factor Arrows
13461

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, 13, 461

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 13 x 461 = 647,244

This can also be written as 22 x 33 x 131 x 4611 = 647,244

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


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