Q: What are the prime factors of the number 29,192,800?

 A: 2, 5, 7, 13, 401

Why are those the prime factors of the number 29,192,800?

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 29,192,800

29,192,800
Factor Arrows
214,596,400
Factor Arrows
27,298,200
Factor Arrows
23,649,100
Factor Arrows
21,824,550
Factor Arrows
2912,275
Factor Arrows
5182,455
Factor Arrows
536,491
Factor Arrows
75,213
Factor Arrows
13401

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, 7, 13, 401

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 5 x 7 x 13 x 401 = 29,192,800

This can also be written as 25 x 52 x 71 x 131 x 4011 = 29,192,800

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


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