Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
212: | \[{10^{212}-1\over9}\] | 11 × 101 × 107 × 1061 × 1659431 × 5051749 × 1325815267337711173<19> × 47198858799491425660200071<26> × 245391150214875249502685807421982149521<39> × 9090909090909090909090909090909090909090909090909091<52> × 75277048352808729626679875852901448034540173569840168229<56> |