49999: Near Repdigit 499..99
First few terms (base 10): \[[49^*_{10}]_n=\{4,49,499,4999,49999,\ldots\}\]
General Formula:\[[49^*_{10}]_n=5\cdot10^{n}-1\]
Equivalent Patterns: \[[9^*8_{10}]_n=2\cdot[49^*_{10}]_n\] \[[19^*6_{10}]_n=4\cdot[49^*_{10}]_n\] \[[29^*4_{10}]_n=6\cdot[49^*_{10}]_n\] \[[39^*2_{10}]_n=8\cdot[49^*_{10}]_n\]
See Also: Factorization of 499..99 on stdkmd.net
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