Here are some factors that could be considered:
* Global Recognition: Some names are instantly recognized across the world, like Nelson Mandela, Albert Einstein, or Michael Jackson.
* Social Media Presence: Someone with billions of followers on social media could be considered very famous.
* Cultural Impact: Individuals who have had a significant impact on art, music, literature, or technology could be considered famous.
* Historical Significance: Historical figures who shaped the world are often highly recognized, like Cleopatra or Genghis Khan.
Ultimately, the "most famous person" is a matter of opinion and depends on your definition of fame.