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Why 1 Is Not A Prime Number? [Solved]
1 can only be divided by one number, 1 itself, so with this definition 1 is not a prime number. It is important to remember that mathematical definitions develop and evolve. Throughout history, many mathematicians considered 1 to be a prime number although that is not now a commonly held view.
Why 1 is not a Prime number?
1 and Prime Numbers - Numberphile
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Is 1 a Prime Number? (Why isn’t 1 Prime?)
Is 1 prime? Is 1 a prime number?
