Q: What are the prime factors of the number 40,410,160?

 A: 2, 5, 7, 72161

Why are those the prime factors of the number 40,410,160?

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 40,410,160

40,410,160
Factor Arrows
220,205,080
Factor Arrows
210,102,540
Factor Arrows
25,051,270
Factor Arrows
22,525,635
Factor Arrows
5505,127
Factor Arrows
772,161

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, 5, 7, 72161

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 7 x 72,161 = 40,410,160

This can also be written as 24 x 51 x 71 x 72,1611 = 40,410,160

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


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