Q: What are the prime factors of the number 186,400?

 A: 2, 5, 233

Why are those the prime factors of the number 186,400?

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 186,400

186,400
Factor Arrows
293,200
Factor Arrows
246,600
Factor Arrows
223,300
Factor Arrows
211,650
Factor Arrows
25,825
Factor Arrows
51,165
Factor Arrows
5233

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, 233

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 233 = 186,400

This can also be written as 25 x 52 x 2331 = 186,400

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


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