Q: What are the prime factors of the number 1,603,392?

 A: 2, 3, 7, 1193

Why are those the prime factors of the number 1,603,392?

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 1,603,392

1,603,392
Factor Arrows
2801,696
Factor Arrows
2400,848
Factor Arrows
2200,424
Factor Arrows
2100,212
Factor Arrows
250,106
Factor Arrows
225,053
Factor Arrows
38,351
Factor Arrows
71,193

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, 7, 1193

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 7 x 1,193 = 1,603,392

This can also be written as 26 x 31 x 71 x 1,1931 = 1,603,392

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


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