Q: What are the prime factors of the number 68,913?

 A: 3, 13, 19, 31

Why are those the prime factors of the number 68,913?

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 68,913

68,913
Factor Arrows
322,971
Factor Arrows
37,657
Factor Arrows
13589
Factor Arrows
1931

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:

3, 13, 19, 31

We can check our work by multiplying all of the prime factors together: 3 x 3 x 13 x 19 x 31 = 68,913

This can also be written as 32 x 131 x 191 x 311 = 68,913

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


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