Fatto matematico: 1868 is the smallest number that can not be formed using the digit 1 at most 20 times, together with the symbols +, × and ^.
Trivia: 1868 is a boring number.
Data storica: February 10th is the day in 1920 that Jozef Haller de Hallenburg performs symbolic wedding of Poland to the sea, celebrating restitution of Polish access to open sea.