Q: What are the prime factors of the number 2,178,448?

 A: 2, 17, 8009

Why are those the prime factors of the number 2,178,448?

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 2,178,448

2,178,448
Factor Arrows
21,089,224
Factor Arrows
2544,612
Factor Arrows
2272,306
Factor Arrows
2136,153
Factor Arrows
178,009

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, 17, 8009

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 17 x 8,009 = 2,178,448

This can also be written as 24 x 171 x 8,0091 = 2,178,448

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


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