Q: What are the prime factors of the number 120,212,224?

 A: 2, 11, 42689

Why are those the prime factors of the number 120,212,224?

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 120,212,224

120,212,224
Factor Arrows
260,106,112
Factor Arrows
230,053,056
Factor Arrows
215,026,528
Factor Arrows
27,513,264
Factor Arrows
23,756,632
Factor Arrows
21,878,316
Factor Arrows
2939,158
Factor Arrows
2469,579
Factor Arrows
1142,689

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, 11, 42689

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 11 x 42,689 = 120,212,224

This can also be written as 28 x 111 x 42,6891 = 120,212,224

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


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