Base 6 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
223: | \[{6^{223}-1\over5}\] | 359734681 × 19261747635283<14> × 9729282948267945890544045482865460796329375838841813885801524753946376614740465065957156359219519891667437419584037768151410378706960966051623688753481<151> |