40007: Quasi Repdigit 400..007

First few terms (base 10): \[[40^*7_{10}]_n=\{47,407,4007,40007,400007,\ldots\}\]

General Formula:\[[40^*7_{10}]_n=40\cdot10^{n}+7\]

Equivalent Patterns: (none)

See Also: Factorization of 400..007 on stdkmd.net

Table

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