Base 12 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 90: | \[{12^{90}-1\over11}\] | 7 × 13 × 19 × 31 × 37 × 61 × 157 × 181 × 421 × 661 × 1657 × 1801 × 9781 × 19141 × 22621 × 30781 × 35671 × 80749 × 5234401 × 21456901 × 22981681 × 47263556341<11> × 9298142299081<13> |