A single Rocketdyne F-1 engine from the bottom of the Saturn V had about the same thrust (about 1.5 million lbs.) as the whole first stage of a Falcon 9. And it

A single Rocketdyne F-1 engine from the bottom of the Saturn V had about the same thrust (about 1.5 million lbs.) as the whole first stage of a Falcon 9. And it had 5 of those. A proposed new version of the F-1 would produce even more thrust, 1.8 million lbs.