Base 23 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
56: | \[{23^{56}-1\over22}\] | 25 × 3 × 5 × 29 × 53 × 71 × 673 × 2969 × 10781 × 139921 × 598193 × 3391669 × 5336717 × 480249047846803230704957710381921<33> |