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List all of the prime numbers that are between 20 and 30?
23 29.
List all of the prime numbers between 20 and 30?
They are 23 and 29.
How many are all the prime numbers 1 to 100?
25 prime numbers in that range.
What is the connection between Euclid and prime numbers?
Euclid (c. 300 BC) was one of the first to prove that there are infinitely many prime numbers. His proof was essentially to assume that there were a finite number of prime numbers, and arrive at a contradiction. Thus, there must be infinitely many prime numbers. Specifically, he supposed that if there were a finite number of prime numbers, then if one were to multiply all those prime numbers together and add 1, it would result in a number that was not divisible by any of the (finite number of) prime numbers, thus would itself be a prime number larger than the largest prime number in the assumed list - a contradiction.
What two numbers have 1 as there gcf?
Prime and relatively prime numbers all have a GCF of 1.
