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.

液晶の遅延が結構ひどい Think of me ち○こっみーにしか聞こえなかったあの頃

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1633 days ago

液晶の遅延が結構ひどい Think of me ち○こっみーにしか聞こえなかったあの頃

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