Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
159: | \[{18^{159}-1\over17}\] | 73 × 92857 × 3429183529 × 4239894319 × 46950348182128332126379933709499018110168129345669111329<56> × 104854251251278141747876726155269720581474606606612400728169309835031426052867035635689349509176133885267537448264967<117> |