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Exa

Exa (symbol E) is a prefix in the SI system of units denoting 1018 or 1 000 000 000 000 000 000.

Adopted in 1991, it comes from the Greek ἕξ, meaning six (like hexa-), because it is equal to 10006.


See also

External link

Last updated: 10-16-2005 16:10:57
Last updated: 01-04-2007 01:18:57
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