Q: What are the prime factors of the number 39,926,304?

 A: 2, 3, 11, 4201

Why are those the prime factors of the number 39,926,304?

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 39,926,304

39,926,304
Factor Arrows
219,963,152
Factor Arrows
29,981,576
Factor Arrows
24,990,788
Factor Arrows
22,495,394
Factor Arrows
21,247,697
Factor Arrows
3415,899
Factor Arrows
3138,633
Factor Arrows
346,211
Factor Arrows
114,201

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, 11, 4201

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 11 x 4,201 = 39,926,304

This can also be written as 25 x 33 x 111 x 4,2011 = 39,926,304

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


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