Here are the 5 largest earthquakes ever recorded, according to the search results:

1. Valdivia, Chile 22 May 1960 (magnitude 9.5)
2. Prince William Sound, Alaska 28 March 1964 (magnitude 9.2)
3. Sumatra-Andaman Islands Earthquake (2004) (magnitude 9.1)
4. Tohoku Earthquake (2011) (magnitude 9.0)
5. Kamchatka Earthquake, Russia (1952) (magnitude 9.0)

Note that different sources may have slightly different rankings or magnitudes for these earthquakes, but they are generally consistent with each other.