49997: Quasi Repdigit 499..997

First few terms (base 10): \[[49^*7_{10}]_n=\{47,497,4997,49997,499997,\ldots\}\]

General Formula:\[[49^*7_{10}]_n=50\cdot10^{n}-3\]

Equivalent Patterns: \[[9^*4_{10}]_n=2\cdot[49^*7_{10}]_{n-1}\]

See Also: Factorization of 499..997 on stdkmd.net

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