Q: What are the prime factors of the number 1,845,072?

 A: 2, 3, 4271

Why are those the prime factors of the number 1,845,072?

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 1,845,072

1,845,072
Factor Arrows
2922,536
Factor Arrows
2461,268
Factor Arrows
2230,634
Factor Arrows
2115,317
Factor Arrows
338,439
Factor Arrows
312,813
Factor Arrows
34,271

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, 4271

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 4,271 = 1,845,072

This can also be written as 24 x 33 x 4,2711 = 1,845,072

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


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