Q: What are the prime factors of the number 1,856,800?

 A: 2, 5, 11, 211

Why are those the prime factors of the number 1,856,800?

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 1,856,800

1,856,800
Factor Arrows
2928,400
Factor Arrows
2464,200
Factor Arrows
2232,100
Factor Arrows
2116,050
Factor Arrows
258,025
Factor Arrows
511,605
Factor Arrows
52,321
Factor Arrows
11211

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, 11, 211

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 11 x 211 = 1,856,800

This can also be written as 25 x 52 x 111 x 2111 = 1,856,800

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


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