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"A UUID is a 16-byte (128-bit) number. The number of theoretically possible UUIDs is therefore 216*8 = 2128 = 25616 or about 3.4 × 1038. This means that 1 trillion UUIDs would have to be created every nanosecond for 10 billion years to exhaust the number of UUIDs."
It made the article several times more readable, and gave the context straight away, even if it is not genuinely of mathematical use... <span style="font-size: smaller;" class="autosigned">— Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/87.127.211.206|87.127.211.206]] ([[User talk:87.127.211.206|talk]]) 13:37, 25 August 2011 (UTC)</span><!-- Template:Unsigned IP --> <!--Autosigned by SineBot-->
I think that a 128-bit number has 2^128 possible values, not 3.4 x 1038. Is that x supposed to be a power?
I have read,elsewhere, that there are enough UUIDs to assign one to every atom in the known universe. On the other hand, http://en.wikipedia.org/wiki/Observable_universe says that the known universe has about 10^80 atoms. I think that 10^80 is about 2^265, which is larger than 2^128. I'm confused. [[Special:Contributions/75.146.141.142|75.146.141.142]] ([[User talk:75.146.141.142|talk]]) 22:19, 27 April 2012 (UTC)
== We need more material in this article ==
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