Originally posted by Mr_Trek:[..]
No, it's 1024
I think we're both right according to the all-knowing wikipedia:
Tera- (symbol: T) is a prefix in the metric system denoting 10^12 or 1000000000000.
The prefix tera was was confirmed in 1960. In computer science tera can sometimes mean 1099511627776 (2^40) instead of 1000000000000, especially in the term terabyte. To avoid this ambiguity, the binary prefix tebi has been introduced to signify 2^40.