Q: What are the prime factors of the number 3,846,912?

 A: 2, 3, 5009

Why are those the prime factors of the number 3,846,912?

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 3,846,912

3,846,912
Factor Arrows
21,923,456
Factor Arrows
2961,728
Factor Arrows
2480,864
Factor Arrows
2240,432
Factor Arrows
2120,216
Factor Arrows
260,108
Factor Arrows
230,054
Factor Arrows
215,027
Factor Arrows
35,009

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, 5009

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 3 x 5,009 = 3,846,912

This can also be written as 28 x 31 x 5,0091 = 3,846,912

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


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