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19111: Near Repdigit 1911..11

First few terms (base 10): \[[191^*_{10}]_n=\{19,191,1911,19111,191111,\ldots\}\]

General Formula:\[[191^*_{10}]_n={172\cdot10^{n}-1\over9}\]

Equivalent Patterns: \[[95^*_{10}]_n=5\cdot[191^*_{10}]_{n-1}\] \[[47^*5_{10}]_n=25\cdot[191^*_{10}]_{n-1}\]

See Also: Factorization of 1911..11 on stdkmd.net

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