Q: What are the prime factors of the number 40,636,512?

 A: 2, 3, 7, 6719

Why are those the prime factors of the number 40,636,512?

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 40,636,512

40,636,512
Factor Arrows
220,318,256
Factor Arrows
210,159,128
Factor Arrows
25,079,564
Factor Arrows
22,539,782
Factor Arrows
21,269,891
Factor Arrows
3423,297
Factor Arrows
3141,099
Factor Arrows
347,033
Factor Arrows
76,719

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, 7, 6719

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 7 x 6,719 = 40,636,512

This can also be written as 25 x 33 x 71 x 6,7191 = 40,636,512

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


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