Q: What are the prime factors of the number 2,238,400?

 A: 2, 5, 1399

Why are those the prime factors of the number 2,238,400?

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 2,238,400

2,238,400
Factor Arrows
21,119,200
Factor Arrows
2559,600
Factor Arrows
2279,800
Factor Arrows
2139,900
Factor Arrows
269,950
Factor Arrows
234,975
Factor Arrows
56,995
Factor Arrows
51,399

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, 1399

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 5 x 5 x 1,399 = 2,238,400

This can also be written as 26 x 52 x 1,3991 = 2,238,400

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


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