Q: What are the prime factors of the number 100,101,312?

 A: 2, 3, 53, 1093

Why are those the prime factors of the number 100,101,312?

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 100,101,312

100,101,312
Factor Arrows
250,050,656
Factor Arrows
225,025,328
Factor Arrows
212,512,664
Factor Arrows
26,256,332
Factor Arrows
23,128,166
Factor Arrows
21,564,083
Factor Arrows
3521,361
Factor Arrows
3173,787
Factor Arrows
357,929
Factor Arrows
531,093

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, 53, 1093

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 3 x 3 x 3 x 53 x 1,093 = 100,101,312

This can also be written as 26 x 33 x 531 x 1,0931 = 100,101,312

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


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