Base 12 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 123: | \[{12^{123}-1\over11}\] | 83 × 157 × 1977898057 × 97668924760419986491370101198871<32> × 198135604158907130782358027548853011255022891234380210220638216697707952818607731672501<87> |