After some research I've found that most people with a high IQ don't know it. Those who do know their IQ know little about what it means in general and specifically to their own situation. IQ measurement has very little to nothing to do with learned knowledge. It has to do with how the brain works differently among some people.
Oldest Person in the World. If you want to know the record holder for the oldest person in the world, then you're in the right place. Jeanne Louise Calment (born in 1875 / died 1997) was the oldest living person and had the longest confirmed human life span in history, living to the age of 122 years, 164 days. She lived in Arles, France, for her entire life, and outlived both her daughter and grandson.
The longest documented lifespan for a living person is that of 114-year-old Besse Cooper, of Georgia, United States, who was born on 26 August 1896. She succeeded Eunice Sanborn of Texas, United States, on 31 January 2011.