Q: What are the prime factors of the number 111,130,320?

 A: 2, 3, 5, 7, 29, 2281

Why are those the prime factors of the number 111,130,320?

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 111,130,320

111,130,320
Factor Arrows
255,565,160
Factor Arrows
227,782,580
Factor Arrows
213,891,290
Factor Arrows
26,945,645
Factor Arrows
32,315,215
Factor Arrows
5463,043
Factor Arrows
766,149
Factor Arrows
292,281

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, 29, 2281

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 7 x 29 x 2,281 = 111,130,320

This can also be written as 24 x 31 x 51 x 71 x 291 x 2,2811 = 111,130,320

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


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