Q: What are the prime factors of the number 124,045,152?

 A: 2, 3, 7, 11, 97, 173

Why are those the prime factors of the number 124,045,152?

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 124,045,152

124,045,152
Factor Arrows
262,022,576
Factor Arrows
231,011,288
Factor Arrows
215,505,644
Factor Arrows
27,752,822
Factor Arrows
23,876,411
Factor Arrows
31,292,137
Factor Arrows
7184,591
Factor Arrows
1116,781
Factor Arrows
97173

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, 7, 11, 97, 173

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 7 x 11 x 97 x 173 = 124,045,152

This can also be written as 25 x 31 x 71 x 111 x 971 x 1731 = 124,045,152

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


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