Q: What are the prime factors of the number 26,128,784?

 A: 2, 11, 31, 4789

Why are those the prime factors of the number 26,128,784?

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 26,128,784

26,128,784
Factor Arrows
213,064,392
Factor Arrows
26,532,196
Factor Arrows
23,266,098
Factor Arrows
21,633,049
Factor Arrows
11148,459
Factor Arrows
314,789

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, 11, 31, 4789

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 11 x 31 x 4,789 = 26,128,784

This can also be written as 24 x 111 x 311 x 4,7891 = 26,128,784

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


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