Q: What are the prime factors of the number 1,812,448?

 A: 2, 11, 19, 271

Why are those the prime factors of the number 1,812,448?

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 1,812,448

1,812,448
Factor Arrows
2906,224
Factor Arrows
2453,112
Factor Arrows
2226,556
Factor Arrows
2113,278
Factor Arrows
256,639
Factor Arrows
115,149
Factor Arrows
19271

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, 11, 19, 271

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 11 x 19 x 271 = 1,812,448

This can also be written as 25 x 111 x 191 x 2711 = 1,812,448

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


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