Q: What are the prime factors of the number 128,277,884?

 A: 2, 7, 93497

Why are those the prime factors of the number 128,277,884?

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 128,277,884

128,277,884
Factor Arrows
264,138,942
Factor Arrows
232,069,471
Factor Arrows
74,581,353
Factor Arrows
7654,479
Factor Arrows
793,497

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, 7, 93497

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 7 x 7 x 93,497 = 128,277,884

This can also be written as 22 x 73 x 93,4971 = 128,277,884

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


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