The quadgrand faxul is equal to ((...((200!)!)!...)!)![1] (with trigrand faxul ()'s) or 200(!200(!200(!200(!200!+1)+1)+1)+1) using Nested Factorial Notation. The term was coined by Lawrence Hollom.
Etymology 
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The name of this number is based on Latin prefix "quad-" and the number "grand kilofaxul".
SourcesEdit
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