Jiroemon Kimura is the oldest living human being.

Kimura, who lives in western Japan, is 116 years old. He’s the last man alive who has lived in three different centuries.

The only other man who was alive before the 20th century (before the year 1901) was James Emmanuel Sisnett, who died last week at age 113.

Not only is Kimura the oldest man living right now, he is also the oldest man who has ever lived whose birth age can be verified. “Verified” means proved to be true. There are other men who have said they are older than 116, but there wasn’t any way to be certain of the truth.

Kimura worked for the post office until he was 65 and then farmed until he was 90.

He isn’t the only one in his family to live a long time: four of his siblings lived to be 90 or older and one of his brothers made it to age 100.

One of the strangest things about Kimura’s age is that his hometown of Kyotango, Japan, is reported to have 95 centenarians, even though the population of the whole city is just 60,000. “Centenarian” means “over the age of 100.”