Q: What are the prime factors of the number 115,054,240?

 A: 2, 5, 7, 43, 2389

Why are those the prime factors of the number 115,054,240?

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 115,054,240

115,054,240
Factor Arrows
257,527,120
Factor Arrows
228,763,560
Factor Arrows
214,381,780
Factor Arrows
27,190,890
Factor Arrows
23,595,445
Factor Arrows
5719,089
Factor Arrows
7102,727
Factor Arrows
432,389

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, 5, 7, 43, 2389

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 7 x 43 x 2,389 = 115,054,240

This can also be written as 25 x 51 x 71 x 431 x 2,3891 = 115,054,240

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


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