Click the green flag or the 'another' button to start the number When you input a number, it will turn it into large form! For example, 10^2018 = 100 unseptuagintasescentillion, which is a HUGE number! I might go over 3003 as the max, but that is only for the future. Longest: 10^1367. Check yourself! Shortest: 10^0. Yep