Here is one of the brightest flashlights money can buy. The IMALENT MS18 is a 100,000-lumens flashlight with 18 x XHP70 LEDs. It has a beam range of 1350m. This flashlight has 9 settings. It has an OLED display that shows power level.
The MS18 is made of aluminum alloy (IP56 rated). It has a thermal control module that automatically adjusts brightness output. The bad news? Something like this doesn’t come cheap.