Is 1 a prime number?
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No
The confusion begins with this definition a person might give of “prime”: a prime number is a positive whole number that is only divisible by 1 and itself. The number 1 is divisible by 1, and it's divisible by itself. But itself and 1 are not two distinct factors. Excluding 1 from the primes smooths that out.
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no 1 is non prime number
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