Q: What are the prime factors of the number 28,182,200?

 A: 2, 5, 29, 43, 113

Why are those the prime factors of the number 28,182,200?

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 28,182,200

28,182,200
Factor Arrows
214,091,100
Factor Arrows
27,045,550
Factor Arrows
23,522,775
Factor Arrows
5704,555
Factor Arrows
5140,911
Factor Arrows
294,859
Factor Arrows
43113

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, 29, 43, 113

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 29 x 43 x 113 = 28,182,200

This can also be written as 23 x 52 x 291 x 431 x 1131 = 28,182,200

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


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