5 5 (from 5 to 5) 50 (from 50 to 50s BC) 51 (from 51 to 51forth programming language) 52 (from 52 to 52nd Division) 53 (from 53 to 53rd Division) 54 (from 54 to 54th Massachusetts Volunteer Infantry) 55 (from 55 to 55-year system) 56 (from 56 to 56k line) 57 (from 57 to 57 BC) 58 (from 58 to 58 BC) 59 (from 59 to 59 BC) 5_ (from 5.56mm caliber to 5ème arrondissement, Paris) 5e (from 5ESS Switch to 5ESS Switch) 5t (from 5T4 to 5th Panzer Division)