Q: What are the prime factors of the number 121,033,116?

 A: 2, 3, 19, 19661

Why are those the prime factors of the number 121,033,116?

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 121,033,116

121,033,116
Factor Arrows
260,516,558
Factor Arrows
230,258,279
Factor Arrows
310,086,093
Factor Arrows
33,362,031
Factor Arrows
31,120,677
Factor Arrows
3373,559
Factor Arrows
1919,661

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, 19, 19661

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 19 x 19,661 = 121,033,116

This can also be written as 22 x 34 x 191 x 19,6611 = 121,033,116

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


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