Q: What are the prime factors of the number 111,553,344?

 A: 2, 3, 7, 73, 379

Why are those the prime factors of the number 111,553,344?

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 111,553,344

111,553,344
Factor Arrows
255,776,672
Factor Arrows
227,888,336
Factor Arrows
213,944,168
Factor Arrows
26,972,084
Factor Arrows
23,486,042
Factor Arrows
21,743,021
Factor Arrows
3581,007
Factor Arrows
3193,669
Factor Arrows
727,667
Factor Arrows
73379

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, 73, 379

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 3 x 7 x 73 x 379 = 111,553,344

This can also be written as 26 x 32 x 71 x 731 x 3791 = 111,553,344

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


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