Q: What are the prime factors of the number 427,400?

 A: 2, 5, 2137

Why are those the prime factors of the number 427,400?

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 427,400

427,400
Factor Arrows
2213,700
Factor Arrows
2106,850
Factor Arrows
253,425
Factor Arrows
510,685
Factor Arrows
52,137

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, 2137

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 2,137 = 427,400

This can also be written as 23 x 52 x 2,1371 = 427,400

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


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