Q: What are the prime factors of the number 124,445,160?

 A: 2, 3, 5, 7, 31, 59

Why are those the prime factors of the number 124,445,160?

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 124,445,160

124,445,160
Factor Arrows
262,222,580
Factor Arrows
231,111,290
Factor Arrows
215,555,645
Factor Arrows
35,185,215
Factor Arrows
31,728,405
Factor Arrows
3576,135
Factor Arrows
3192,045
Factor Arrows
364,015
Factor Arrows
512,803
Factor Arrows
71,829
Factor Arrows
3159

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, 31, 59

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 3 x 3 x 5 x 7 x 31 x 59 = 124,445,160

This can also be written as 23 x 35 x 51 x 71 x 311 x 591 = 124,445,160

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


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