Q: What are the prime factors of the number 87,776?

 A: 2, 13, 211

Why are those the prime factors of the number 87,776?

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 87,776

87,776
Factor Arrows
243,888
Factor Arrows
221,944
Factor Arrows
210,972
Factor Arrows
25,486
Factor Arrows
22,743
Factor Arrows
13211

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, 13, 211

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 13 x 211 = 87,776

This can also be written as 25 x 131 x 2111 = 87,776

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


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