Fatto matematico: 13985 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 13985 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: April 15th is the day in 1638 that Tokugawa shogunate forces put down the Shimabara Rebellion when they retake Hara Castle from the rebels.