How old did James ussher say the earth is from the bible?

James Ussher, a 17th-century archbishop, calculated that the Earth was created in 4004 BC based on biblical genealogies and historical texts. This means he estimated the Earth's age to be around 6,000 years. His chronology was published in the "Annals of the World" in 1650 and has been widely referenced in discussions about the age of the Earth from a biblical perspective.