Q: What are the prime factors of the number 41,120,640?

 A: 2, 3, 5, 11, 59

Why are those the prime factors of the number 41,120,640?

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 41,120,640

41,120,640
Factor Arrows
220,560,320
Factor Arrows
210,280,160
Factor Arrows
25,140,080
Factor Arrows
22,570,040
Factor Arrows
21,285,020
Factor Arrows
2642,510
Factor Arrows
2321,255
Factor Arrows
3107,085
Factor Arrows
335,695
Factor Arrows
57,139
Factor Arrows
11649
Factor Arrows
1159

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, 5, 11, 59

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 3 x 3 x 5 x 11 x 11 x 59 = 41,120,640

This can also be written as 27 x 32 x 51 x 112 x 591 = 41,120,640

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


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