OEIS link for a description of lunar arithmetic

Simply take the larger digit when adding and take the smaller digit when multiplying.

Example

        15866
     X    147
     _________
        15766
       14444
    + 11111
    __________
      1145766
Solve

Solution Stats

169 Solutions

50 Solvers

Last Solution submitted on May 24, 2026

Last 200 Solutions

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers50

Chris Cleveland George Berken Mehdi Dehghan Lorenzo

Suggested Problems

More from this Author92

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!