Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
119: | \[{18^{119}-1\over17}\] | 17 × 239 × 449 × 953 × 80207 × 304879 × 5616807617<10> × 54458809889863<14> × 7563707819165039903<19> × 142613585494032388107039215098460999999404970478166538519375298212120378883753934210817<87> |