6174

@smania0711

Select any four digit number (not repdigit). Arrange the digits in descending (n') and ascending (n''). Then, compute n'-n''. Repeat this routine.

とりあえず連打抜けた後死んだ

Views 212

1560 days ago

とりあえず連打抜けた後死んだ

0 Comments

Realtime comments disabled