Q: What are the prime factors of the number 2,223,456?

 A: 2, 3, 19, 23, 53

Why are those the prime factors of the number 2,223,456?

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 2,223,456

2,223,456
Factor Arrows
21,111,728
Factor Arrows
2555,864
Factor Arrows
2277,932
Factor Arrows
2138,966
Factor Arrows
269,483
Factor Arrows
323,161
Factor Arrows
191,219
Factor Arrows
2353

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, 3, 19, 23, 53

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 19 x 23 x 53 = 2,223,456

This can also be written as 25 x 31 x 191 x 231 x 531 = 2,223,456

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


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