Q: What are the prime factors of the number 211,263,125?

 A: 5, 157, 2153

Why are those the prime factors of the number 211,263,125?

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 211,263,125

211,263,125
Factor Arrows
542,252,625
Factor Arrows
58,450,525
Factor Arrows
51,690,105
Factor Arrows
5338,021
Factor Arrows
1572,153

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:

5, 157, 2153

We can check our work by multiplying all of the prime factors together: 5 x 5 x 5 x 5 x 157 x 2,153 = 211,263,125

This can also be written as 54 x 1571 x 2,1531 = 211,263,125

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


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