Q: What are the prime factors of the number 212,210,100?

 A: 2, 3, 5, 235789

Why are those the prime factors of the number 212,210,100?

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 212,210,100

212,210,100
Factor Arrows
2106,105,050
Factor Arrows
253,052,525
Factor Arrows
317,684,175
Factor Arrows
35,894,725
Factor Arrows
51,178,945
Factor Arrows
5235,789

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, 3, 5, 235789

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 5 x 235,789 = 212,210,100

This can also be written as 22 x 32 x 52 x 235,7891 = 212,210,100

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


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