Am I a Self Number? – codegolf.stackexchange.com 02:44 Posted by Unknown No Comments A self number (also called a Colombian or Devlali number) is a natural number, x, where the equation n + <digit sum of n> = x has no solutions for any natural number n. For example, 21 is not a ... from Hot Questions - Stack Exchange OnStackOverflow via Blogspot Share this Unknown
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