Q: What are the prime factors of the number 247,216?

 A: 2, 15451

Why are those the prime factors of the number 247,216?

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 247,216

247,216
Factor Arrows
2123,608
Factor Arrows
261,804
Factor Arrows
230,902
Factor Arrows
215,451

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, 15451

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 15,451 = 247,216

This can also be written as 24 x 15,4511 = 247,216

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


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