Quadrillion
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- In Wikipedia: Wikipedia:Manual of Style (dates and numbers)
Quadrillion may mean either of the two numbers (see long and short scales for more detail):
- 1,000,000,000,000,000 (one thousand trillion; 1015) - increasingly common meaning in English language usage
- 1,000,000,000,000,000,000,000,000 (1024) - increasingly rare meaning in English language usage.
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