Q: What are the prime factors of the number 115,725,168?

 A: 2, 3, 13, 61819

Why are those the prime factors of the number 115,725,168?

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 115,725,168

115,725,168
Factor Arrows
257,862,584
Factor Arrows
228,931,292
Factor Arrows
214,465,646
Factor Arrows
27,232,823
Factor Arrows
32,410,941
Factor Arrows
3803,647
Factor Arrows
1361,819

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, 13, 61819

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 13 x 61,819 = 115,725,168

This can also be written as 24 x 32 x 131 x 61,8191 = 115,725,168

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


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