Q: What are the prime factors of the number 247,086?

 A: 2, 3, 7, 37, 53

Why are those the prime factors of the number 247,086?

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 247,086

247,086
Factor Arrows
2123,543
Factor Arrows
341,181
Factor Arrows
313,727
Factor Arrows
71,961
Factor Arrows
3753

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, 7, 37, 53

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 7 x 37 x 53 = 247,086

This can also be written as 21 x 32 x 71 x 371 x 531 = 247,086

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


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