"Century series fighters" is the name collectively given to fighters whose names range from F-100 to F-111: in Latin, "one hundred" is called a "century" (hence e.g. "cent" = 1/100 of one dollar). Usually, one mentions the Century fighters as F-100, F-101, F-102, F-104, F-105 and F-106, though F-105 was not a fighter and there were YF-107 and F-110 too (which was the USAF's Phantom II before the name change to F-4).
