This would give you an idea. Probably ~ 400k cd.
Platinum Thor 15 Million CP Halogen: 380,000 cp (Maxablaster host): 130W, 9” reflector (Measured by RA)
Several other 15 Million cp halogen spotlights: Non went above 400,000 CP, unknown but large reflector sizes(Measured by RA)
Thor 10 Million CP Halogen: 183,000 CP 100w, 7” reflector (measured by mtbkndad & calculated by RA)