Q: What are the prime factors of the number 33,776,512?

 A: 2, 7, 11, 23, 149

Why are those the prime factors of the number 33,776,512?

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 33,776,512

33,776,512
Factor Arrows
216,888,256
Factor Arrows
28,444,128
Factor Arrows
24,222,064
Factor Arrows
22,111,032
Factor Arrows
21,055,516
Factor Arrows
2527,758
Factor Arrows
2263,879
Factor Arrows
737,697
Factor Arrows
113,427
Factor Arrows
23149

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, 11, 23, 149

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 7 x 11 x 23 x 149 = 33,776,512

This can also be written as 27 x 71 x 111 x 231 x 1491 = 33,776,512

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


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