Q: What are the prime factors of the number 13,121,200?

 A: 2, 5, 32803

Why are those the prime factors of the number 13,121,200?

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 13,121,200

13,121,200
Factor Arrows
26,560,600
Factor Arrows
23,280,300
Factor Arrows
21,640,150
Factor Arrows
2820,075
Factor Arrows
5164,015
Factor Arrows
532,803

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, 32803

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 5 x 32,803 = 13,121,200

This can also be written as 24 x 52 x 32,8031 = 13,121,200

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


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