Columbus and 2 Esdras again

COLUMBUS DAY: Top 10 facts about Columbus. OCTOBER 12 is celebrated in some places as Columbus Day, in celebration of Christopher Columbus’s sighting land on October 12, 1492 to discover the Americas. (WILLIAM HARTSTON, The Express). I can't speak for the accuracy of all these claimed facts, but number 4 is correct:

4. ...his calculations were based on the Second Book of Esdras in the Apocrypha which suggested the Earth was six parts land to one part water.

Details here. Other past PaleoJudaica posts on Columbus are here and here and links.