Q: What are the prime factors of the number 100,161,545?

 A: 5, 11, 491, 3709

Why are those the prime factors of the number 100,161,545?

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 100,161,545

100,161,545
Factor Arrows
520,032,309
Factor Arrows
111,821,119
Factor Arrows
4913,709

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:

5, 11, 491, 3709

We can check our work by multiplying all of the prime factors together: 5 x 11 x 491 x 3,709 = 100,161,545

This can also be written as 51 x 111 x 4911 x 3,7091 = 100,161,545

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


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