Quote:
Originally Posted by Dieter
Is 1 a smooth number?

If you are asking just to question the simple answer we can go with {2} and {2}.
If you are really asking, then we can use the definition on Wikipedia page on "
Smooth Number"s which defines it as:
"A positive integer is called Bsmooth if none of its prime factors is greater than B."
As none of 1's prime factors are greater than 1, it is Nsmooth for any N > 1.