Pending official confirmation, SpaceX likely just conducted the most powerful rocket engine firing in history.
Each Raptor has approximately the thrust of three Merlin engines. Falcon Heavy has 27 engines. This was a full engine test of 14 engines.
Even if they ran at slightly lower thrust, I think it is safe to say the above is now confirmed.
Thats about 4000T of thrust, Saturn 5 was around 3,500T.