Yes, I understand that I will not be running Windows desktop, or doing anything remotely familiar on a QC. But factoring very large numbers very fast has been,

Yes, I understand that I will not be running Windows desktop, or doing anything remotely familiar on a QC. But factoring very large numbers very fast has been, for quite a while now, the sales pitch of the QC evangelists. One of the strongest use cases put forward, one that has gotten many a grad students a thesis, and many schools and labs a fat grant. But yet, my $1.50 microcontroller can do it in a few milliseconds, while a $10M, liquid nitrogen cooled monster is incapable of doing so. I don't see progress occurring.