Q: What are the prime factors of the number 4,001,600?

 A: 2, 5, 41, 61

Why are those the prime factors of the number 4,001,600?

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 4,001,600

4,001,600
Factor Arrows
22,000,800
Factor Arrows
21,000,400
Factor Arrows
2500,200
Factor Arrows
2250,100
Factor Arrows
2125,050
Factor Arrows
262,525
Factor Arrows
512,505
Factor Arrows
52,501
Factor Arrows
4161

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, 41, 61

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 5 x 5 x 41 x 61 = 4,001,600

This can also be written as 26 x 52 x 411 x 611 = 4,001,600

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


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