Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
125: | \[{18^{125}-1\over17}\] | 41 × 2711 × 602401 × 74813517001<11> × 21162386787273369601<20> × 36775924395863544366841001<26> × 122378983316662586314901626364039311112246588670852928799085901921007069381675550069202001<90> |