Q: What are the prime factors of the number 105,402,048?

 A: 2, 3, 37, 401

Why are those the prime factors of the number 105,402,048?

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 105,402,048

105,402,048
Factor Arrows
252,701,024
Factor Arrows
226,350,512
Factor Arrows
213,175,256
Factor Arrows
26,587,628
Factor Arrows
23,293,814
Factor Arrows
21,646,907
Factor Arrows
3548,969
Factor Arrows
3714,837
Factor Arrows
37401

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, 37, 401

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 37 x 37 x 401 = 105,402,048

This can also be written as 26 x 31 x 372 x 4011 = 105,402,048

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


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