Q: What are the prime factors of the number 122,212,020?

 A: 2, 3, 5, 7, 43, 67, 101

Why are those the prime factors of the number 122,212,020?

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 122,212,020

122,212,020
Factor Arrows
261,106,010
Factor Arrows
230,553,005
Factor Arrows
310,184,335
Factor Arrows
52,036,867
Factor Arrows
7290,981
Factor Arrows
436,767
Factor Arrows
67101

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, 5, 7, 43, 67, 101

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 7 x 43 x 67 x 101 = 122,212,020

This can also be written as 22 x 31 x 51 x 71 x 431 x 671 x 1011 = 122,212,020

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


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