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Ancient Greek mathematician Eratosthenes devised a way to find prime numbersINTERFOTO / Alamy Stock Photo
By Donna LuPRIME numbers may have been studied for over 2000 years, but there is always something new to learn. A method for finding primes first devised by the ancient Greek mathematician Eratosthenes in 240 BC has had a 21st century upgrade.
Prime numbers are divisible only by themselves and 1, and form the building blocks of all other numbers – multiplying different primes creates the rest of the whole numbers.
The Sieve of Eratosthenes, as it is known, lets you find all prime numbers …