>OK, it says it used to be considered a prime.  I guess I'm just an old 
>fogey from way back when one was prime.  ;-)

I'm 44.  In High School (No, it was my *parents* who live in the stone age)
we learned that 1 was not a prime number.

I was never told the logic of this (if there is any).  I always figured it
was because primes were divisible by 2 numbers (themselves and 1).  But 1 is
only divisible by one number (itself IS 1).

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