"12345" is a sequence of five consecutive digits, commonly used as a simple example in various contexts, such as coding, mathematics, and data entry. It is often chosen for its ease of memorization and recognition, making it a popular placeholder or test input in software applications. In the realm of cybersecurity, "12345" is frequently cited as one of the most common and insecure passwords. Users are advised against using such easily guessable combinations to protect their accounts and personal information from unauthorized access.