Q: What are the prime factors of the number 26,161,152?

 A: 2, 3, 2129

Why are those the prime factors of the number 26,161,152?

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 26,161,152

26,161,152
Factor Arrows
213,080,576
Factor Arrows
26,540,288
Factor Arrows
23,270,144
Factor Arrows
21,635,072
Factor Arrows
2817,536
Factor Arrows
2408,768
Factor Arrows
2204,384
Factor Arrows
2102,192
Factor Arrows
251,096
Factor Arrows
225,548
Factor Arrows
212,774
Factor Arrows
26,387
Factor Arrows
32,129

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, 2129

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 3 x 2,129 = 26,161,152

This can also be written as 212 x 31 x 2,1291 = 26,161,152

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


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