Q: What are the prime factors of the number 122,142,144?

 A: 2, 3, 17, 23, 1627

Why are those the prime factors of the number 122,142,144?

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 122,142,144

122,142,144
Factor Arrows
261,071,072
Factor Arrows
230,535,536
Factor Arrows
215,267,768
Factor Arrows
27,633,884
Factor Arrows
23,816,942
Factor Arrows
21,908,471
Factor Arrows
3636,157
Factor Arrows
1737,421
Factor Arrows
231,627

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, 17, 23, 1627

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 3 x 17 x 23 x 1,627 = 122,142,144

This can also be written as 26 x 31 x 171 x 231 x 1,6271 = 122,142,144

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


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