Q: What are the prime factors of the number 40,310,080?

 A: 2, 5, 103, 1223

Why are those the prime factors of the number 40,310,080?

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 40,310,080

40,310,080
Factor Arrows
220,155,040
Factor Arrows
210,077,520
Factor Arrows
25,038,760
Factor Arrows
22,519,380
Factor Arrows
21,259,690
Factor Arrows
2629,845
Factor Arrows
5125,969
Factor Arrows
1031,223

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, 103, 1223

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 5 x 103 x 1,223 = 40,310,080

This can also be written as 26 x 51 x 1031 x 1,2231 = 40,310,080

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


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