Q: What are the prime factors of the number 1,003,904?

 A: 2, 11, 23, 31

Why are those the prime factors of the number 1,003,904?

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 1,003,904

1,003,904
Factor Arrows
2501,952
Factor Arrows
2250,976
Factor Arrows
2125,488
Factor Arrows
262,744
Factor Arrows
231,372
Factor Arrows
215,686
Factor Arrows
27,843
Factor Arrows
11713
Factor Arrows
2331

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, 23, 31

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 2 x 11 x 23 x 31 = 1,003,904

This can also be written as 27 x 111 x 231 x 311 = 1,003,904

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


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