839
This number is a prime.
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The number 6*(10^839-1)/9-839 is the only non-titanic prime that consists of n 6’s minus n, for any integer n > 1. Note the form 6*(10^n-1)/9-n. [Loungrides]
Submitted: 2013-10-09 11:41:05; Last Modified: 2016-07-28 11:42:29.
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