Q:

What are the prime numbers between 100 and 200?

A:

The prime numbers between 100 and 200 are 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197 and 199. A prime number is a whole number greater than 1, which is evenly divisible only by itself and the number 1.

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Credit: Procsilas Moscas CC-BY 2.0

The ancient Greek mathematicians did a comprehensive study on prime numbers and their properties. Pythagoras was mainly interested in numerology and sought to find "perfect" and "amicable" numbers. When Euclid published his work "Elements," he proved the existence of an infinite number of primes. Eratosthenes became famous for his "Sieve of Eratosthenes," which was an algorithm for calculating primes.

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