Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 233: | \[{18^{233}-1\over17}\] | 1399 × 12583 × 10643441 × 166864759764270791<18> × 56623429804956428556696034367761844453831569117899036935891346169278393236639301684820391815870472729042368251673498793789852324492814128733705447549837426661767411393690216214779885125377057519359956715249709649598899004695814478163290627539752331766360417513<260> |