The number "1345" is a four-digit integer that follows 1344 and precedes 1346. It can be expressed in various forms, such as Roman numerals (MCCCXLV) or in binary (10100111101). In mathematics, it is classified as a composite number, meaning it has divisors other than one and itself. In historical contexts, the year 1345 is notable for several events, including the establishment of the University of Prague, one of the oldest universities in Europe. Additionally, it was during this time that the Black Death began to spread across Europe, significantly impacting the continent's population and society.