Q: What are the prime factors of the number 121,068,384?

 A: 2, 3, 1123

Why are those the prime factors of the number 121,068,384?

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 121,068,384

121,068,384
Factor Arrows
260,534,192
Factor Arrows
230,267,096
Factor Arrows
215,133,548
Factor Arrows
27,566,774
Factor Arrows
23,783,387
Factor Arrows
31,261,129
Factor Arrows
1,1231,123

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, 1123

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 1,123 x 1,123 = 121,068,384

This can also be written as 25 x 31 x 1,1232 = 121,068,384

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


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