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27, 720

1 is prime

2 is prime

3 is prime

4 = 2^2 (number must have 2 factors of 2)

5 is prime

6 = 2*3 (number must have at least 1 factor of three and one factor of 2)

7 is prime

8 = 2^3

9 = 3^2

10 = 5*2

11 = prime

12 = 2*2*3

2*2*2*3*3*5*7*11 = 27720

* * * * *

1 is not a prime (nor is it a composite number). The characteristic of prime or composite is defined for integers greater than 1.

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12y ago
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Q: What is the smallest number which is exactly divisible by all the numbers from 1 12?
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