Q: What are the prime factors of the number 122,623,616?

 A: 2, 43, 22279

Why are those the prime factors of the number 122,623,616?

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 122,623,616

122,623,616
Factor Arrows
261,311,808
Factor Arrows
230,655,904
Factor Arrows
215,327,952
Factor Arrows
27,663,976
Factor Arrows
23,831,988
Factor Arrows
21,915,994
Factor Arrows
2957,997
Factor Arrows
4322,279

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, 43, 22279

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 43 x 22,279 = 122,623,616

This can also be written as 27 x 431 x 22,2791 = 122,623,616

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


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