← 202 204 → 203
← 200 210 220 230 240 250 260 270 280 290 → List of numbers — Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	two hundred [and] three
Ordinal	203rd (two hundred [and] second)
Numeral system	203
Factorization	7 × 29
Divisors	1, 7, 29, 203
Roman numeral	CCIII
Binary	110010112
Octal	3138
Duodecimal	14B12
Hexadecimal	CB16

203 is the natural number following 202 and preceding 204. It may be written as "two hundred three" or "two hundred and three".

In mathematics

203 is the 6th Bell number, i.e. it is the number of partitions of a set of size 6.

In other fields

• 203 is the HTTP status code indicating partial information.
• 203 mm howitzer M1931 (B-4) was 203 mm (8 inch) Soviet heavy howitzer. Guns that were used with success against heavy German fortifications
• The 203mm/50 Modèle 1924 gun and 203mm/55 Modèle 1931 gun were medium naval guns of the French Navy.
• 203 Pompeja is a quite large Main belt asteroid.
• The year 203