Q: What are the prime factors of the number 100,161,534?

 A: 2, 3, 11, 29, 43, 1217

Why are those the prime factors of the number 100,161,534?

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 100,161,534

100,161,534
Factor Arrows
250,080,767
Factor Arrows
316,693,589
Factor Arrows
111,517,599
Factor Arrows
2952,331
Factor Arrows
431,217

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, 11, 29, 43, 1217

We can check our work by multiplying all of the prime factors together: 2 x 3 x 11 x 29 x 43 x 1,217 = 100,161,534

This can also be written as 21 x 31 x 111 x 291 x 431 x 1,2171 = 100,161,534

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


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