Base 12 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 178: | \[{12^{178}-1\over11}\] | 13 × 179 × 2137 × 7477 × 120863 × 3163346581 × 16649789224075621<17> × 35035317869663569<17> × 255053775727906405559<21> × 4656868283889935515079<22> × 572511347126394968679427<24> × 20029774803390781007927452919681748300758231180524216087657680800539<68> |