Prime Curios!: 1601

1601
(just those submitted by Capelle)

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Pierre de Fermat ("The Prince of Amateurs") was born in 1601. Did he know that 1601 to the power 1601 ends with 1601? [Capelle]

x² - 79x + 1601 gives primes for x = 0 to 79, with one repetition of each prime obtained. Note that 79 and 1601 are primes. [Capelle]