[seqfan] Re: Maple packages numbertheory replaced by NumberTheory

[Peter Luschny]

I think SageMath does it right:

    jacobi_symbol(5, 2)
    -> ValueError: p must be odd

    legendre_symbol(5, 2)
    -> ValueError: p must be odd

    kronecker_symbol(5, 2)
    -1

There is very little reason to use expensive closed source
software when it comes to number theory.

Peter