Q: What are the prime factors of the number 78,966?

 A: 2, 3, 41, 107

Why are those the prime factors of the number 78,966?

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 78,966

78,966
Factor Arrows
239,483
Factor Arrows
313,161
Factor Arrows
34,387
Factor Arrows
41107

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, 41, 107

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 41 x 107 = 78,966

This can also be written as 21 x 32 x 411 x 1071 = 78,966

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


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