Q: What are the prime factors of the number 91,611?

 A: 3, 13, 29

Why are those the prime factors of the number 91,611?

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 91,611

91,611
Factor Arrows
330,537
Factor Arrows
310,179
Factor Arrows
33,393
Factor Arrows
31,131
Factor Arrows
3377
Factor Arrows
1329

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, 29

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 13 x 29 = 91,611

This can also be written as 35 x 131 x 291 = 91,611

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


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