Q: What are the prime factors of the number 240,102,720?

 A: 2, 3, 5, 11, 13, 53

Why are those the prime factors of the number 240,102,720?

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 240,102,720

240,102,720
Factor Arrows
2120,051,360
Factor Arrows
260,025,680
Factor Arrows
230,012,840
Factor Arrows
215,006,420
Factor Arrows
27,503,210
Factor Arrows
23,751,605
Factor Arrows
31,250,535
Factor Arrows
3416,845
Factor Arrows
583,369
Factor Arrows
117,579
Factor Arrows
11689
Factor Arrows
1353

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, 13, 53

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 3 x 3 x 5 x 11 x 11 x 13 x 53 = 240,102,720

This can also be written as 26 x 32 x 51 x 112 x 131 x 531 = 240,102,720

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


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