Which us presidents served the shortest terms?

The shortest-serving President was William Henry Harrison. He fell ill immediately following his inauguration in 1841 and died of pneumonia a month later. He was only President for a month. The next shortest term was James A. Garfield, at about 6 months. He took office in March 1881, was shot in July, and died in September. In 3rd was Zachary Taylor. He came down with an infection of the stomach and/or intestines a little over a year into his term and died in July of 1850.