A mathematical Prime number has only 2 factors. 1 and itself. 1 is not prime as it only has one factor. Both factors must be positive integers.
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Prime numbers have only 2 factors and their set is not well defined because they do not follow an orderly mathematical pattern.
No one has ever discovered the mathematical pattern for prime numbers and all that is known about them is that each prime number has only 2 factors which are itself and one.
Co-prime numbers are a mathematical concept that has been studied and used by many mathematicians over the years. There isn't a single person who can be credited with "inventing" co-prime numbers. The concept of co-prime numbers has been known and used in mathematics for centuries, with contributions from various mathematicians throughout history.
Oh, happy little numbers! Let's take a look at the numbers 20 to 45 and find the prime ones together. Prime numbers are like rare gems in a vast mathematical landscape. From 20 to 45, we have the prime numbers 23, 29, 31, 37, 41, and 43. Keep exploring the beauty of numbers, my friend!
Prime numbers are only really used for 3 things. 1) Cryptography. Look up the algorithm "RSA" in cryptography. It is widely used and relies heavily on prime numbers. 2) Attempted alien communications. Prime numbers are one of the simplest demonstrations of intelligence, and can be understood regardless of language or culture. Thus, many signals sent out to aliens include prime numbers to demonstrate we are intelligent. 3) Mathematical conversations, jokes, and beauty. Many mathematicians find prime numbers to be beautiful, and enjoy discussing them. Any particular person is unlikely to knowingly manipulate prime numbers in their life.