Q: What are the prime factors of the number 100,161,536?

 A: 2, 48907

Why are those the prime factors of the number 100,161,536?

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 100,161,536

100,161,536
Factor Arrows
250,080,768
Factor Arrows
225,040,384
Factor Arrows
212,520,192
Factor Arrows
26,260,096
Factor Arrows
23,130,048
Factor Arrows
21,565,024
Factor Arrows
2782,512
Factor Arrows
2391,256
Factor Arrows
2195,628
Factor Arrows
297,814
Factor Arrows
248,907

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, 48907

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 48,907 = 100,161,536

This can also be written as 211 x 48,9071 = 100,161,536

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


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