Composite Number: A composite number is a positive integer greater than 1 that has more than two divisors. In other words, it's not a prime number.
Sieve of Eratosthenes: The Sieve of Eratosthenes is an ancient algorithm used to find all prime numbers up to a given limit efficiently.
Prime Factorization: Prime factorization involves expressing a composite number as the product of its prime factors.