On 2014/04/22 20:52, Dominique Devienne wrote:
On Tue, Apr 22, 2014 at 8:46 PM, RSmith <rsm...@rsweb.co.za> wrote:
On 2014/04/22 20:06, Dominique Devienne wrote:
Regarding the uniqueness argument made by DRH, it's actually very hard
to generate 2 random-based GUIDS, given that a 128-bit is a very very
large number. It is said that 128-bit is large enough to store the
estimated number of atoms in our galaxy.//
current estimates
are between 78 and 82 orders of magnitude (that's 1.0E+82) of atoms in the
known universe in decimal, which would be around ~1.0 x 2^270 and obviously
require around 270 bits to store.
That's why I wrote "our galaxy", not the "whole universe" ;) --DD
Hehe, my bad... but that only changes a few orders of magnitude, there's only a
few billion galaxies :D
You'd still need over 200 bits for just our galaxy!
Atoms are pretty small it seems...
_______________________________________________
sqlite-users mailing list
sqlite-users@sqlite.org
http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
