1002 is an integer that comes after 1001 and before 1003. It is also the name of a year in the Julian calendar, falling in the 11th century of the Common Era (CE/AD).

According to the Islamic calendar (Hijri), the year 1002 CE corresponds roughly to the years 392–393 AH. Precise correspondence depends on the lunar months, so the two Hijri years always overlap with the Common Era year in question.

Mathematical properties

1002 is an even number, as it is divisible by two. It is a composite number, whose prime factors are 2 × 3 × 167. Its divisors are 1, 2, 3, 6, 167, 334, 501, and 1002. The sum of its proper divisors (those less than the number itself) is 1014, making 1002 an abundant number.

In binary notation, 1002 is written as 1111101010. In Roman numerals it is written as MII. In Somali it is called "kun iyo laba" (thousand and two).

The year 1002 in history

This year falls within a period when the Middle East and North Africa were dominated by the Abbasid Caliphate based in Baghdad, the Fatimid Caliphate in Egypt, and the Ghaznavid Empire in eastern Iran. In Europe, the Holy Roman Empire and the Byzantine Empire were the major powers. Details of specific events in this year vary among different historical sources.

UncertaintyHistories of events in the 11th century are often recorded in different calendar systems (Julian, Hijri, Byzantine). Because of differences between calendars, a given event may fall in different years depending on the calendar used.

NoteAn "abundant number" is one whose sum of proper divisors (divisors less than itself) exceeds the number itself.

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