[Cryptography] quantum computers & crypto

[cherry]

On 10/22/21 1:51 AM, Rodney Van Meter via cryptography wrote:
> Gentlefolk,
>
> I’m not a regular subscriber to the list, but a colleague asked7
> that has gone quiet, but I thought folks might be interested
> anyway. A bit about me and my work at the bottom; ignore the
> bio bits if you prefer, but disclaimers apply. I’ll also include
> a dump of URLs, mostly but not entirely to my stuff, which you can
> read or ignore as you see fit.
>
> I enjoyed the thread with John, Henry, Phillip and a couple of
> others. Most of what was said I think is pretty accurate.
>
> A few points (my apologies for being windy here):
>
> As noted, quantum computers are still embryonic, but they are
> getting better at a pretty good clip.

About thirty years ago, from memory, they factored the number
fifteen.  Have they factored the number twenty one yet?