Q: What are the prime factors of the number 210,200,100?

 A: 2, 3, 5, 11, 63697

Why are those the prime factors of the number 210,200,100?

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 210,200,100

210,200,100
Factor Arrows
2105,100,050
Factor Arrows
252,550,025
Factor Arrows
317,516,675
Factor Arrows
53,503,335
Factor Arrows
5700,667
Factor Arrows
1163,697

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, 11, 63697

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 11 x 63,697 = 210,200,100

This can also be written as 22 x 31 x 52 x 111 x 63,6971 = 210,200,100

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


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