[seqfan] Re: Potentially dumb question: Is 1 squarefree?

Marc LeBrun mlb at well.com
Sat Feb 12 01:00:41 CET 2011

>="Alonso Del Arte" <alonso.delarte at gmail.com>
> Is 1 a squarefree number?

I imagine it's sensitive to subtleties of how you define squarefree, and
opinions and tastes on this may differ.

My impulse would be to define squarefree in terms of prime factorization--a
squarefree number then has all exponents <2.  The exponents in the prime
factorization of 1 are all 0, so under that definition it is squarefree.

But perhaps there are other equally consistent alternative interpretations.

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