Q: What are the prime factors of the number 3,889,408?

 A: 2, 15193

Why are those the prime factors of the number 3,889,408?

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 3,889,408

3,889,408
Factor Arrows
21,944,704
Factor Arrows
2972,352
Factor Arrows
2486,176
Factor Arrows
2243,088
Factor Arrows
2121,544
Factor Arrows
260,772
Factor Arrows
230,386
Factor Arrows
215,193

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, 15193

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 2 x 15,193 = 3,889,408

This can also be written as 28 x 15,1931 = 3,889,408

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


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