Thanks to Maglite posting Lumens, beam candlepower [cd, probably standing for candela] and throw, if you know beam candlepower you can figure out throw.
The formula is
Throw = (0.007212541 x cd) + 120.5950053
for the range 5000 to 38,000 cd and throws of 140 to 390 meters, with a max error of 11% and average error = 0.7%.
Therefore, for one of these 1,000,000 candlepower lights the throw should be 7300 meters, without knowing the beam angle.
I can't check this because I burned out the bulb in my spotlight while trying to run it off of 12vac. It was operator error.