Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 250: | \[{18^{250}-1\over17}\] | 11 × 19 × 41 × 251 × 2711 × 3251 × 9041 × 602401 × 738851 × 74813517001<11> × 19301767104251<14> × 17254127651933924651<20> × 21162386787273369601<20> × 180182156384572588430251<24> × 36775924395863544366841001<26> × 8404798426684218799994459622001<31> × 14116390572513128348035959898119829062132076781545001<53> × 122378983316662586314901626364039311112246588670852928799085901921007069381675550069202001<90> |