Passage: The archipelago consists of 36,563 islands, of which 94 are classified as major islands, being larger than 130 km2 (50 sq mi), and cover a total area of 1,400,000 km2 (540,000 sq mi). The islands of the archipelago over 10,000 km2 (3,900 sq mi), in order of descending area, are:

Question: How many square miles does an island have to be to be classified as a major island?
50 sq mi