Q: What are the prime factors of the number 40,661,120?

 A: 2, 5, 63533

Why are those the prime factors of the number 40,661,120?

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 40,661,120

40,661,120
Factor Arrows
220,330,560
Factor Arrows
210,165,280
Factor Arrows
25,082,640
Factor Arrows
22,541,320
Factor Arrows
21,270,660
Factor Arrows
2635,330
Factor Arrows
2317,665
Factor Arrows
563,533

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, 63533

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 63,533 = 40,661,120

This can also be written as 27 x 51 x 63,5331 = 40,661,120

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


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