So at this time, it seems that the world’s oldest person is 116 years old.  What I’d like to know is the record for the length of time that someone has held the title of the world’s oldest person. The answer to that doesn’t appear to be available at Guiness World Records.

Update:  The record for the length of time that someone has been the world’s oldest person is probably held by Jeanne Calment, who became the oldest person at age 112 and died at age 122.