How long did it take to build the great pyramid and which pharaoh built it?

Most experts estimate the Great Pyramid was built in 14-20 years by the 4th dynasty Pharaoh Khufu (sometimes called Cheops) who ruled Egypt between 2598 and 2566 BCE. Not that he did it himself. He left that to his architect (tradition claims this was Khufu's cousin Hemiunu), priests, surveyors, scribes, skilled workers and thousands of slaves.