Base 12 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 60: | \[{12^{60}-1\over11}\] | 52 × 7 × 13 × 19 × 29 × 31 × 61 × 157 × 421 × 661 × 9781 × 19141 × 20593 × 22621 × 35671 × 85403261 × 186168115009253521<18> |