Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
123: | \[{18^{123}-1\over17}\] | 73 × 3811279 × 114341047 × 448890223 × 1064115526969448071<19> × 3690199547499754891800937863511<31> × 394867037344695962525971723264825927<36> × 14153782597443172550196845634941164999799977<44> |