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    Zillion

    Definition

    A generic word for a very large number. The term has no well-defined mathematical meaning. Conway and Guy define the nth zillion as 10^(3n + 3) in the American system (million = 10^6, billion = 10^9, trillion = 10^12, ...) and 10^(6n) in the British system (million = 10^6, billion = 10^12, trillion = 10^18, ...). Conway and Guy also define the words n-plex and n-minex for 10^n and 10^(-n), respectively.

    Related term

    large number

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