Q: What are the prime factors of the number 26,821,250?

 A: 2, 5, 43, 499

Why are those the prime factors of the number 26,821,250?

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 26,821,250

26,821,250
Factor Arrows
213,410,625
Factor Arrows
52,682,125
Factor Arrows
5536,425
Factor Arrows
5107,285
Factor Arrows
521,457
Factor Arrows
43499

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, 43, 499

We can check our work by multiplying all of the prime factors together: 2 x 5 x 5 x 5 x 5 x 43 x 499 = 26,821,250

This can also be written as 21 x 54 x 431 x 4991 = 26,821,250

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


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