Q: What are the prime factors of the number 100,331,127?

 A: 3, 13, 17, 73, 691

Why are those the prime factors of the number 100,331,127?

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 100,331,127

100,331,127
Factor Arrows
333,443,709
Factor Arrows
311,147,903
Factor Arrows
13857,531
Factor Arrows
1750,443
Factor Arrows
73691

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, 17, 73, 691

We can check our work by multiplying all of the prime factors together: 3 x 3 x 13 x 17 x 73 x 691 = 100,331,127

This can also be written as 32 x 131 x 171 x 731 x 6911 = 100,331,127

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


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