Q: What are the prime factors of the number 122,144,200?

 A: 2, 5, 610721

Why are those the prime factors of the number 122,144,200?

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 122,144,200

122,144,200
Factor Arrows
261,072,100
Factor Arrows
230,536,050
Factor Arrows
215,268,025
Factor Arrows
53,053,605
Factor Arrows
5610,721

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, 5, 610721

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 610,721 = 122,144,200

This can also be written as 23 x 52 x 610,7211 = 122,144,200

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


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