Q: What are the prime factors of the number 105,536,512?

 A: 2, 23, 4481

Why are those the prime factors of the number 105,536,512?

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 105,536,512

105,536,512
Factor Arrows
252,768,256
Factor Arrows
226,384,128
Factor Arrows
213,192,064
Factor Arrows
26,596,032
Factor Arrows
23,298,016
Factor Arrows
21,649,008
Factor Arrows
2824,504
Factor Arrows
2412,252
Factor Arrows
2206,126
Factor Arrows
2103,063
Factor Arrows
234,481

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, 23, 4481

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 23 x 4,481 = 105,536,512

This can also be written as 210 x 231 x 4,4811 = 105,536,512

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


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