The modern digit 8, like all modern Arabic numerals other than zero, originates with the Brahmi numerals. The Brahmi digit for eight by the 1st century was written in one stroke as a curve └┐ looking like an uppercase H with … See more

8 a composite composite number. 8 is 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 perfect power. 8 is the first proper Leyland number of the form x + y , where in its case … See more

• A byte is eight bits.
• Many (mostly historic) computer architectures are eight-bit, among them the Nintendo Entertainment System.
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• The Magical Number Seven, Plus or Minus Two
• List of highways numbered 8 See more

Physics
• In nuclear physics, the second magic number.
• In particle physics, the eightfold way is used to classify sub … See more

Currency
• Sailors and civilians alike from the 1500s onward referred to evenly divided parts of the Spanish dollar as "pieces of eight", or "bits". See more

• The Octonions, John C. Baez See more