39991: Quasi Repdigit 399..991

First few terms (base 10): \[[39^*1_{10}]_n=\{31,391,3991,39991,399991,\ldots\}\]

General Formula:\[[39^*1_{10}]_n=40\cdot10^{n}-9\]

Equivalent Patterns: (none)

See Also: Factorization of 399..991 on stdkmd.net

Table

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