Q: What are the prime factors of the number 40,007,136?

 A: 2, 3, 13, 32057

Why are those the prime factors of the number 40,007,136?

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 40,007,136

40,007,136
Factor Arrows
220,003,568
Factor Arrows
210,001,784
Factor Arrows
25,000,892
Factor Arrows
22,500,446
Factor Arrows
21,250,223
Factor Arrows
3416,741
Factor Arrows
1332,057

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, 13, 32057

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 13 x 32,057 = 40,007,136

This can also be written as 25 x 31 x 131 x 32,0571 = 40,007,136

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


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