What is the longest poem a sonnet or an epic or a ballad?

Epic, Ballad and Sonnet

The epic is by definition the longest. The Sonnet contains only fourteen lines, and while a Ballad has no exact limit in length, the fact that it usually deals with less serious ideas than the epic (a snatchet of folklore, romance between young and unlikely people as opposed to the founding/destruction of a civilisation, a national history, the Fall of Man etc.) and that it is written for a musical composition puts quite a stamp on its possible length and flexibility (songs must be easy to remember, with popular stock kenningse etc). The epic is on the other hand a long narrative poem in highly glamorous language, and in dealing with supremely significant events, often of national character, its ambition almost enforces it to stupendous length (spanning several books, as Paradise Lost, the Aeneid and many others), and the repetition of certain scenes, such as the hero getting armed for battle, does not exactly make it brief either. It therefore makes great demands on the poet's dexterity, imagination and stamina, and is usually regarded as the most ambitious form of poetry.

The world's longest poem in literature belongs to writer/artist Nigel Tomm. Almost all of his book The Blah Story, Volume 8 consists of one poem which contains 98,728 Words; 449,441 characters (with spaces); 23,161 lines; 728 pages. It is the longest published poem in English. The poem is called My Blah Story and it is written by one novel's character. See

http://www.pressbox.co.uk/detailed/Arts/World_s_Longest_Poem_in_English_172959.html

The longest poem is the Mahabharat, with 220,000 verses