The number "223" is an integer that follows 222 and precedes 224. It is an odd number and can be expressed as the sum of two prime numbers, specifically 223 = 113 + 110. In mathematics, it is often used in various calculations and can be found in different contexts, such as statistics and coding. In the context of firearms, "223" commonly refers to the 5.56×45mm NATO cartridge, which is widely used in military and civilian rifles. This cartridge is known for its accuracy and low recoil, making it popular among sport shooters and hunters. The AR-15 rifle is one of the most recognized firearms that chamber this round.