A 1 B 2 C3d4e5f6g7h8i9j10k11l12m13 2025 Battery. The a1z26 encoding or (cipher) got its name from the way it works: The solution (s) to a quadratic equation can be calculated using the quadratic formula:

Letter number cipher (a1z26) replaces each letter by the corresponding position in an alphabet (a=1, b=2,., z=26). This is called the a1z26 cipher.