Q: What are the prime factors of the number 40,008,768?

 A: 2, 3, 208379

Why are those the prime factors of the number 40,008,768?

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 40,008,768

40,008,768
Factor Arrows
220,004,384
Factor Arrows
210,002,192
Factor Arrows
25,001,096
Factor Arrows
22,500,548
Factor Arrows
21,250,274
Factor Arrows
2625,137
Factor Arrows
3208,379

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, 3, 208379

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 3 x 208,379 = 40,008,768

This can also be written as 26 x 31 x 208,3791 = 40,008,768

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


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