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eratosthenes Definition

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eratosthenes
biographical name(Er-a-tos-the-nes)
circa 276—circa 194 b.c. Greek astronomer
eratosthenes
noun phrase(Er-a-tos-the-nes)
a procedure for finding prime numbers that involves writing down the odd numbers from 2 up in succession and crossing out every third number after 3, every fifth after 5 including those already crossed out, every seventh after 7, and so on with the numbers that are never crossed out being prime

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