- A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. For example, 5 is prime because the only ways of writing it as a product, 1 × 5 or 5 × 1, involve 5 itself. However, 4 is composite because it is a product (2 × 2) in which both numbers are smaller than 4. Primes are central in number theory because of the fundamental theorem of arithmetic: every natural number greater than 1 is either a prime itself or can be factorized as a product of primes that is unique up to their order.
- The Chronicle of the Kings of England (1821)
Sovereign Swine! For your instruction and amusement, to improve your grovelling propensities, by teaching a due respect for yourselves, and a just estimate of your superiors, this history of your chief drivers, from the first mighty hog of Normandy to the present great and glorious hog of Hanover, is now dedicated.