From Wikipedia, the free encyclopedia.
One hundred three (also One hundred and three) (103, CIII) is the natural number following one hundred two and preceding one hundred four. It is the 27th prime number. The previous prime is one hundred one, with which it comprises a twin prime.
One hundred three is also:
- The atomic number of lawrencium, an actinide.
- The flight number of Pan Am Flight 103, which crashed over Lockerbie, Scottland and was at one time called "the air-disaster of the century".

