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In the US naming system for numbers, one would not normally say one thousand trillion, one would say one quadrillion. One quadrillion in the US system would be 1,000,000,000,000,000.

So wherever you saw this number was probably using the traditional British system where a thousand trillion is not equal to a quadrillion. In the traditional British system a thousand trillion is 1,000,000,000,000,000,000,000.

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15y ago

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