Q: What are the prime factors of the number 213,414,400?

 A: 2, 5, 16673

Why are those the prime factors of the number 213,414,400?

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 213,414,400

213,414,400
Factor Arrows
2106,707,200
Factor Arrows
253,353,600
Factor Arrows
226,676,800
Factor Arrows
213,338,400
Factor Arrows
26,669,200
Factor Arrows
23,334,600
Factor Arrows
21,667,300
Factor Arrows
2833,650
Factor Arrows
2416,825
Factor Arrows
583,365
Factor Arrows
516,673

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, 16673

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 5 x 16,673 = 213,414,400

This can also be written as 29 x 52 x 16,6731 = 213,414,400

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


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