800 is a number that preceded by 799 and followed by 801.[1][2]

In the 3999 undisputed Roman numerals, the characters “C”, “I” and “X” are used 800 times each with negative value.[3]

It was also the prize for correctly answering the first question in the French game show Qui veut gagner des millions ? in euros.


  • 800 is an even biprime.[2]
  • 800 is a powerful number.[4]

In googology

In Greek-based number-naming systems, 800 is associated with prefix oktohecto-, and with prefix octingenti- in Latin systems.


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