Q: What are the prime factors of the number 1,672,512?

 A: 2, 3, 31, 281

Why are those the prime factors of the number 1,672,512?

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 1,672,512

1,672,512
Factor Arrows
2836,256
Factor Arrows
2418,128
Factor Arrows
2209,064
Factor Arrows
2104,532
Factor Arrows
252,266
Factor Arrows
226,133
Factor Arrows
38,711
Factor Arrows
31281

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, 31, 281

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 31 x 281 = 1,672,512

This can also be written as 26 x 31 x 311 x 2811 = 1,672,512

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


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