Q: What are the prime factors of the number 213,320,800?

 A: 2, 5, 7, 11, 3463

Why are those the prime factors of the number 213,320,800?

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 213,320,800

213,320,800
Factor Arrows
2106,660,400
Factor Arrows
253,330,200
Factor Arrows
226,665,100
Factor Arrows
213,332,550
Factor Arrows
26,666,275
Factor Arrows
51,333,255
Factor Arrows
5266,651
Factor Arrows
738,093
Factor Arrows
113,463

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, 7, 11, 3463

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 5 x 7 x 11 x 3,463 = 213,320,800

This can also be written as 25 x 52 x 71 x 111 x 3,4631 = 213,320,800

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


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