>>> (-80538738812075974)**3 + 80435758145817515**3 + 12602123297335631**3 == 42 True # Impressively quickly, in a blink of an eye. This is the last number < 100, not theoretically excluded, to be solved. Compute power provided by CharityEngine. For more, see Numberphile... https://www.youtube.com/watch?v=zyG8Vlw5aAw -- Terry Jan Reedy