Base 12 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 155: | \[{12^{155}-1\over11}\] | 311 × 373 × 22621 × 126883621 × 23364027983<11> × 234187563803<12> × 17379312247321<14> × 32179535439223966162981<23> × 504159451473002560362013386812584959284471<42> × 33191131016885340616262613962982071155757795619241<50> |