#math trivia for #September13: #256 is the last 8th power <= 365. How many years of day-numbers does it take to get to the next 8th power?
— Burt Kaliski Jr. (@modulomathy) September 14, 2013
The next 8th power is 38 = 6561. It takes almost 18 years of day-numbers (365 or 366 numbers per year) to get to 6561.