Q: What are the prime factors of the number 118,028,544?

 A: 2, 3, 313, 491

Why are those the prime factors of the number 118,028,544?

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 118,028,544

118,028,544
Factor Arrows
259,014,272
Factor Arrows
229,507,136
Factor Arrows
214,753,568
Factor Arrows
27,376,784
Factor Arrows
23,688,392
Factor Arrows
21,844,196
Factor Arrows
2922,098
Factor Arrows
2461,049
Factor Arrows
3153,683
Factor Arrows
313491

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, 313, 491

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 313 x 491 = 118,028,544

This can also be written as 28 x 31 x 3131 x 4911 = 118,028,544

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


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