about data type in c#

int: identical with int 32, capacity, 

 Type      Capacity

   Int16 -- (-32,768 to +32,767)

   Int32 (same with int) -- (-2,147,483,648 to +2,147,483,647)

   Int64  (identical with long, Signed 64-bit integer) -- (-9,223,372,036,854,775,808 to +9,223,372,036,854,775,807)