Q: What are the prime factors of the number 3,731,456?

 A: 2, 911

Why are those the prime factors of the number 3,731,456?

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 3,731,456

3,731,456
Factor Arrows
21,865,728
Factor Arrows
2932,864
Factor Arrows
2466,432
Factor Arrows
2233,216
Factor Arrows
2116,608
Factor Arrows
258,304
Factor Arrows
229,152
Factor Arrows
214,576
Factor Arrows
27,288
Factor Arrows
23,644
Factor Arrows
21,822
Factor Arrows
2911

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, 911

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 2 x 2 x 2 x 2 x 911 = 3,731,456

This can also be written as 212 x 9111 = 3,731,456

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


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