Q: What are the prime factors of the number 111,402,624?

 A: 2, 3, 19, 15269

Why are those the prime factors of the number 111,402,624?

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 111,402,624

111,402,624
Factor Arrows
255,701,312
Factor Arrows
227,850,656
Factor Arrows
213,925,328
Factor Arrows
26,962,664
Factor Arrows
23,481,332
Factor Arrows
21,740,666
Factor Arrows
2870,333
Factor Arrows
3290,111
Factor Arrows
1915,269

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, 19, 15269

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 2 x 3 x 19 x 15,269 = 111,402,624

This can also be written as 27 x 31 x 191 x 15,2691 = 111,402,624

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


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