Q: What are the prime factors of the number 57,172,400?

 A: 2, 5, 37, 3863

Why are those the prime factors of the number 57,172,400?

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 57,172,400

57,172,400
Factor Arrows
228,586,200
Factor Arrows
214,293,100
Factor Arrows
27,146,550
Factor Arrows
23,573,275
Factor Arrows
5714,655
Factor Arrows
5142,931
Factor Arrows
373,863

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, 37, 3863

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 5 x 37 x 3,863 = 57,172,400

This can also be written as 24 x 52 x 371 x 3,8631 = 57,172,400

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


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