Q: What are the prime factors of the number 647,994?

 A: 2, 3, 107999

Why are those the prime factors of the number 647,994?

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 647,994

647,994
Factor Arrows
2323,997
Factor Arrows
3107,999

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, 107999

We can check our work by multiplying all of the prime factors together: 2 x 3 x 107,999 = 647,994

This can also be written as 21 x 31 x 107,9991 = 647,994

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


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