Special number/Exercise
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A natural number is called special if it fulfills a specific explicit property. is special, as the neutral element of the addition, and is special, as the neutral element of the multiplication. is the first prime number, is the smallest odd prime number, is the first true square number, is the number of fingers of one hand, is the smallest number composite of different prime numbers, is the number of dwarfs in the fairy tale, etc., so these numbers are all special. Does there exist a number which is not special? Does there exist a smallest number which is not special?