26669: Quasi Repdigit 266..669

First few terms (base 10): \[[26^*9_{10}]_n=\{29,269,2669,26669,266669,\ldots\}\]

General Formula:\[[26^*9_{10}]_n={80\cdot10^{n}+7\over3}\]

Equivalent Patterns: \[[80^*7_{10}]_n=3\cdot[26^*9_{10}]_n\] \[[53^*8_{10}]_n=2\cdot[26^*9_{10}]_n\]

See Also: Factorization of 266..669 on stdkmd.net

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