[Openstreetmap] Running out of OSM IDs ?

[Matt Amos]

On Tuesday 20 December 2005 00:18, SteveC wrote:
> * @ 20/12/05 12:19:46 AM uucp1 at yahoo.com wrote:
> >  Hi,
> >
> >   i have two questions about the OSM node and line
> > IDs.
> >   First, do they overlap ?
> >   Second, are they 32bit or 64bit or just strings made
> > of digits ?
>
> 64 bit

quick back-of-the envelope calculation shows that, if every person in 
the UK uploaded GPS tracks 24/7 every day, we'd run out of uids in 
9742 years.

of course, this doesn't take into account population growth ;-)

cya,

matt