Q: What are the prime factors of the number 77,196?

 A: 2, 3, 7, 919

Why are those the prime factors of the number 77,196?

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 77,196

77,196
Factor Arrows
238,598
Factor Arrows
219,299
Factor Arrows
36,433
Factor Arrows
7919

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, 919

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 919 = 77,196

This can also be written as 22 x 31 x 71 x 9191 = 77,196

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


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