Base 12 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
109: | \[{12^{109}-1\over11}\] | 388475052482842970801320278964160171426121951256610654799120070705613530182445862582590623785872890159937874339918941<117> |