To write the 28323230301002c2323030101aa0029 Sad Symbol Smiley Face symbol on keyboard using ALT codes; ALT+1.3614634036376E+40, just hold down the ALT key while typing the alt key code 1.3614634036376E+40. You have to use the numeric keypad of your keyboard. If you don not have numeric keypad, hold down the Fn and ALT keys while typing the alt code number.