Q: What are the prime factors of the number 2,179,448?

 A: 2, 37, 199

Why are those the prime factors of the number 2,179,448?

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 2,179,448

2,179,448
Factor Arrows
21,089,724
Factor Arrows
2544,862
Factor Arrows
2272,431
Factor Arrows
377,363
Factor Arrows
37199

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, 37, 199

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 37 x 37 x 199 = 2,179,448

This can also be written as 23 x 372 x 1991 = 2,179,448

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


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