Prime number
A natural number greater than 1 whose only divisors are 1 and itself. These numbers—2, 3, 5, 7, and infinitely many more—serve as the building blocks of number theory in Mathematics.
In the Korean drinking game 'The Game of Death,' players point at someone and the host calls a number to hop along the chain. If the host calls a prime number bigger than the player count, they never lose—the loop can only return if its length divides the number.
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