Q: What are the prime factors of the number 104,220,160?

 A: 2, 5, 11, 3701

Why are those the prime factors of the number 104,220,160?

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 104,220,160

104,220,160
Factor Arrows
252,110,080
Factor Arrows
226,055,040
Factor Arrows
213,027,520
Factor Arrows
26,513,760
Factor Arrows
23,256,880
Factor Arrows
21,628,440
Factor Arrows
2814,220
Factor Arrows
2407,110
Factor Arrows
2203,555
Factor Arrows
540,711
Factor Arrows
113,701

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, 5, 11, 3701

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 5 x 11 x 3,701 = 104,220,160

This can also be written as 29 x 51 x 111 x 3,7011 = 104,220,160

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


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