Prime Minister of Australia prime minister, otherwise William McMahon63. Robert Menzies was the oldest person to ever be prime minister, leaving office at 71 years old. The longest-serving Prime Minister was Sir Robert Menzies, who served in office twice: from 26 April 1939 to 28 August 1941, and again from 19 December 1949 to 26 January 1966. In total Robert Menzies spent 18 years, 5 months and 12 days in office. He served under the United Australia Party and the Liberal Party respectively. The shortest-serving Prime Minister was Frank Forde, who was appointed to the position on 6 July 1945 after the death of
Prime Minister of India Indian Foreign Service (IFS). Former prime ministers are entitled to a bungalow, former prime ministers are also entitled the same facilities as those given to a serving cabinet minister, this includes a fourteen-member secretarial staff, for a period of five years; reimbursement of office expenses; six domestic executive-class air tickets each year and; and security cover from the Special Protection Group. In addition, former prime ministers rank seventh on the Indian order of precedence, equivalent to chief ministers of states (within their respective states) and cabinet ministers As a former member of the parliament, the prime minister receives a minimum