77747: Near Repdigit 77..7747

First few terms (base 10): \[[7^*47_{10}]_n=\{47,747,7747,77747,777747,\ldots\}\]

General Formula:\[[7^*47_{10}]_n={700\cdot10^{n}-277\over9}\]

Equivalent Patterns: (none)

See Also: Factorization of 77..7747 on stdkmd.net

Table

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