Q: What are the prime factors of the number 211,244,025?

 A: 3, 5, 79, 101, 353

Why are those the prime factors of the number 211,244,025?

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 211,244,025

211,244,025
Factor Arrows
370,414,675
Factor Arrows
514,082,935
Factor Arrows
52,816,587
Factor Arrows
7935,653
Factor Arrows
101353

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:

3, 5, 79, 101, 353

We can check our work by multiplying all of the prime factors together: 3 x 5 x 5 x 79 x 101 x 353 = 211,244,025

This can also be written as 31 x 52 x 791 x 1011 x 3531 = 211,244,025

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


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