[Cryptography] Has quantum cryptanalysis actually achieved anything?

[Florian Weimer]

* Jon Callas:

> The next technological step we need is a quantum computer that is
> basically a REPL loop. You tell it a number you want to factor and
> it does it. Poof.

But it is this relevant?  If it actually worked for numbers of a
relevant size, would it matter if it took twenty technicians a week or
two to physically reconfigure the system for factoring a different number?