Q: What are the prime factors of the number 3,777,536?

 A: 2, 7, 17, 31

Why are those the prime factors of the number 3,777,536?

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 3,777,536

3,777,536
Factor Arrows
21,888,768
Factor Arrows
2944,384
Factor Arrows
2472,192
Factor Arrows
2236,096
Factor Arrows
2118,048
Factor Arrows
259,024
Factor Arrows
229,512
Factor Arrows
214,756
Factor Arrows
27,378
Factor Arrows
23,689
Factor Arrows
7527
Factor Arrows
1731

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, 7, 17, 31

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 7 x 17 x 31 = 3,777,536

This can also be written as 210 x 71 x 171 x 311 = 3,777,536

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


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