Some Arbitrary Facts About The Number 280

Twitter is trialling an extension to its character limit for tweets – from 140 to 280. Seeing as they find combatting online abuse and Nazism so arbitrary, here are some meaningless facts about the number 280. 280 is an octagonal number Greek mathematician Pappus geometrically demonstrated the property of the center of gravity in 280AD […]

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Bundesstraße 280

Twitter is trialling an extension to its character limit for tweets – from 140 to 280. Seeing as they find combatting online abuse and Nazism so arbitrary, here are some meaningless facts about the number 280.

  • 280 is an octagonal number
  • Greek mathematician Pappus geometrically demonstrated the property of the center of gravity in 280AD
  • 280 is an even composite number composed of three prime numbers multiplied together
  • 280 seconds is equal to 4 minutes, 40 seconds so more time than Justin Timberlake and Madonna had to save the world
  • 280 is a Harshad number
  • 280 is a happy number
  • 280 is apparently the number of ways 18 people at a round table can shake hands in a non-crossing way
  • Herophilus, the father of anatomy, died in 280BC
  • The number of Euros (in millions) Cyprus paid backout of their €1bn IMF bailout loan
  • The number of dollars (in millions) the Staglin Family raised for brain health awareness

(thanks to Numbermatics and Wikipedia for the info)

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