Base 12 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 251: | \[{12^{251}-1\over11}\] | 503 × 195781 × 289444667 × 1155793163468786851614675409281577<34> × 548481679382194709448031861812868591262551381<45> × 37683718092079359629639617680167096604820674917622187062281912344317780321196957602327036541177666716650166605350140548330803577575548990194108202348766830272853650047482276961<176> |