47: A Prime Number is an integer greater than 1 that is divisible only by 1 and itself. A prime number represents a unique factor in multiplication and division. For example, the number 47 is a prime number because it can only be divided evenly by 1 and 47.
Understanding prime numbers is essential for various mathematical and computing applications. Prime numbers form the basis of encryption algorithms, ensuring secure data transmission. Historically, the study of prime numbers has fascinated mathematicians dating back to the ancient Greeks.