600000003

Appears in sequences

• A111386(n-1) concatenated with A111386(n+1) divided by A111386(n).at n=21A111387
• A111386(n-1) concatenated with A111386(n+1) divided by A111386(n).at n=23A111387
• Numbers n such that n + phi(n) is a repdigit.at n=32A116018