103 may refer to: *

103 (number) 103 (one hundred ndthree) is the natural number following 102 and preceding 104. In mathematics 103 is a prime number, and the largest prime factor of 6!+1=721=7\cdot 103. The previous prime is 101. This makes 103 a twin prime A twin prime ...

, the number *

AD 103 103 ( CIII) was a common year starting on Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Traianus and Maximus (or, less frequently, year 856 ''Ab urbe condita''). The denomination 103 for this year has ...

, a year in the 2nd century AD *

103 BC __NOTOC__ Year 103 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Marius and Orestes (or, less frequently, year 651 ''Ab urbe condita'') and the Second Year of Taichu. The denomination 1 ...

, a year in the 2nd century BC * 103 (Tyne Electrical Engineers) Field Squadron, a territorial regiment * 103 (Newcastle) Field Squadron, Royal Engineers * 103 (Lancashire Artillery Volunteers) Regiment Royal Artillery *

103 series The is a DC electric multiple unit (EMU) commuter train type introduced in 1963 by Japanese National Railways (JNR), and currently operated by West Japan Railway Company (JR West) and Kyushu Railway Company (JR Kyushu). They were also operate ...

Japanese rolling stock *103, a development name for the

Tupolev Tu-2 The Tupolev Tu-2 (development names ANT-58 and 103; NATO reporting name Bat) is a twin-engined Soviet high-speed daylight and frontline bomber aircraft used during World War II. The Tu-2 was tailored to meet a requirement for a high-speed bomber ...

* 103 Hera, a main-belt asteroid

See also