Q: What are the prime factors of the number 3,186,912?

 A: 2, 3, 89, 373

Why are those the prime factors of the number 3,186,912?

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 3,186,912

3,186,912
Factor Arrows
21,593,456
Factor Arrows
2796,728
Factor Arrows
2398,364
Factor Arrows
2199,182
Factor Arrows
299,591
Factor Arrows
333,197
Factor Arrows
89373

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, 89, 373

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 89 x 373 = 3,186,912

This can also be written as 25 x 31 x 891 x 3731 = 3,186,912

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


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