Q: What are the prime factors of the number 111,147,264?

 A: 2, 3, 19, 2539

Why are those the prime factors of the number 111,147,264?

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 111,147,264

111,147,264
Factor Arrows
255,573,632
Factor Arrows
227,786,816
Factor Arrows
213,893,408
Factor Arrows
26,946,704
Factor Arrows
23,473,352
Factor Arrows
21,736,676
Factor Arrows
2868,338
Factor Arrows
2434,169
Factor Arrows
3144,723
Factor Arrows
348,241
Factor Arrows
192,539

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, 2539

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 2 x 3 x 3 x 19 x 2,539 = 111,147,264

This can also be written as 28 x 32 x 191 x 2,5391 = 111,147,264

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


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