Q: What are the prime factors of the number 40,210,016?

 A: 2, 7, 11, 16319

Why are those the prime factors of the number 40,210,016?

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 40,210,016

40,210,016
Factor Arrows
220,105,008
Factor Arrows
210,052,504
Factor Arrows
25,026,252
Factor Arrows
22,513,126
Factor Arrows
21,256,563
Factor Arrows
7179,509
Factor Arrows
1116,319

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, 7, 11, 16319

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 11 x 16,319 = 40,210,016

This can also be written as 25 x 71 x 111 x 16,3191 = 40,210,016

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


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