Q: What are the prime factors of the number 327,561,377?

 A: 11, 13, 23, 47, 163

Why are those the prime factors of the number 327,561,377?

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 327,561,377

327,561,377
Factor Arrows
1129,778,307
Factor Arrows
132,290,639
Factor Arrows
13176,203
Factor Arrows
237,661
Factor Arrows
47163

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:

11, 13, 23, 47, 163

We can check our work by multiplying all of the prime factors together: 11 x 13 x 13 x 23 x 47 x 163 = 327,561,377

This can also be written as 111 x 132 x 231 x 471 x 1631 = 327,561,377

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


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