Among the five-digit numbers, the multipliers 12012, 12020, 12220, and 21020 can also be used as a substitute for 1220 in Theorem 2.8—for the reader to verify.
Among the five-digit numbers, the multipliers 12012, 12020, 12220, and 21020can also be used as a substitute for 1220 in Theorem 2.8—for the reader to verify.