Q: What are the prime factors of the number 115,253,040?

 A: 2, 3, 5, 7, 31, 2213

Why are those the prime factors of the number 115,253,040?

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 115,253,040

115,253,040
Factor Arrows
257,626,520
Factor Arrows
228,813,260
Factor Arrows
214,406,630
Factor Arrows
27,203,315
Factor Arrows
32,401,105
Factor Arrows
5480,221
Factor Arrows
768,603
Factor Arrows
312,213

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, 31, 2213

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 31 x 2,213 = 115,253,040

This can also be written as 24 x 31 x 51 x 71 x 311 x 2,2131 = 115,253,040

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


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