1999th

The number 1999 is an integer following 1998 and preceding 2000. It is a prime number. In Roman numerals, 1999 is represented as MCMXCIX. In binary, it is 11111001111.

The year 1999 was a common year, beginning on a Friday according to the Gregorian calendar. Significant events of that year included the establishment of the euro as a currency, the handover of sovereignty of Macau to the People's Republic of China, and the beginning of the Kosovo War. In popular culture, the film "The Matrix" was released, and the band Backstreet Boys released their album "Millennium."

In mathematics, 1999 is notable as a prime number. It is the largest prime number less than 2000. Its digits sum to 28. The number 1999 can be expressed as the sum of two squares: 30^2 + 31^2.

The sequence of numbers leading up to the year 2000, often referred to as the "end of the millennium," saw increased public and media attention on the number 1999. This period was characterized by discussions about the transition into the new millennium and preparedness for potential Y2K issues.