8 is a composite number and the first number which is neither prime nor semiprime. By Mihăilescu's Theorem, it is the only nonzero perfect power that is one less than another …

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"Section 8" is common U.S. slang for "crazy," based on the U.S. military's Section 8 discharge for mentally unfit personnel. In China, "8" is used in chat speak as a term for parting.

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Dec 9, 2025 · Used in the formation of several text messaging slang forms of words with /eɪt/ in them, due to it being the pronunciation of eight in English. See also h8, m8, gr8.

"8." Vocabulary.com Dictionary, Vocabulary.com, https://www.vocabulary.com/dictionary/8. Accessed 23 Dec. 2025. loading examples...