Pi123 is the mathematical constant generated by adding the following three natural numbers to Pi (3.14). This will generate an infinite series starting at 3.14. Pi123’s unique structure and properties have garnered attention, despite its lesser recognition than its counterpart, Pi (π). Pi123 is studied by mathematicians for its potential applications in cryptography, number theory, and sequencing. Despite its lack of practical applications, Pi123 remains a mathematical puzzle that scholars are eager to explore.