Q: What are the prime factors of the number 2,187,600?

 A: 2, 3, 5, 1823

Why are those the prime factors of the number 2,187,600?

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 2,187,600

2,187,600
Factor Arrows
21,093,800
Factor Arrows
2546,900
Factor Arrows
2273,450
Factor Arrows
2136,725
Factor Arrows
345,575
Factor Arrows
59,115
Factor Arrows
51,823

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, 1823

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 5 x 1,823 = 2,187,600

This can also be written as 24 x 31 x 52 x 1,8231 = 2,187,600

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


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