87777: Near Repdigit 877..77
First few terms (base 10): \[[87^*_{10}]_n=\{8,87,877,8777,87777,\ldots\}\]
General Formula:\[[87^*_{10}]_n={79\cdot10^{n}-7\over9}\]
Equivalent Patterns: (none)
See Also: Factorization of 877..77 on stdkmd.net
Table
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