Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
118: | \[{18^{118}-1\over17}\] | 19 × 7907 × 4295428888967<13> × 128998224914431<15> × 312278175742409<15> × 39128840454084865858255640571151<32> × 766147628007216704407313006855253474763752903066750740186891996861801<69> |