250

Centuries: 2nd century - 3rd century - 4th century

Decades: 200s 210s 220s 230s 240s - 250s - 260s 270s 280s 290s 300s

Years: 245 246 247 248 249 - 250 - 251 252 253 254 255

• Diophantus wrote Arithmetica the first systematic treatise on algebra
• A group of Franks penetrated as far as Tarragona in Spain (approximate date)
• Goths invaded Moesia

Births

• Maximian, Roman emperor (approximate date)
• Constantius Chlorus, Roman emperor and father of Constantine the Great (approximate date)
• Arius[?], Christian priest and namesake of Arianism

• January 20 - Pope Fabian