Q: What are the prime factors of the number 122,003,200?

 A: 2, 5, 11, 1733

Why are those the prime factors of the number 122,003,200?

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 122,003,200

122,003,200
Factor Arrows
261,001,600
Factor Arrows
230,500,800
Factor Arrows
215,250,400
Factor Arrows
27,625,200
Factor Arrows
23,812,600
Factor Arrows
21,906,300
Factor Arrows
2953,150
Factor Arrows
2476,575
Factor Arrows
595,315
Factor Arrows
519,063
Factor Arrows
111,733

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, 1733

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 5 x 5 x 11 x 1,733 = 122,003,200

This can also be written as 28 x 52 x 111 x 1,7331 = 122,003,200

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


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