Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 558: | \[{18^{558}-1\over17}\] | 73 × 19 × 73 × 307 × 311 × 991 × 1427 × 12959 × 29017 × 34327 × 52081 × 70619 × 136711 × 465841 × 48274627 × 290978587 × 156375979579<12> × 207073567873<12> × 1276827537047<13> × 9365578696924149281<19> × 2031563183945918294071<22> × 88314086604094759668457<23> × 361794341647699905505399<24> × 51124582874452705456885351<26> × 427906142457974033788659934939<30> × 741885592079762009598337200360385907594036914441<48> × 45293722407512817896780402744247731666953965187247229205664466514537<68> × 102819355604693908113995325178542500096505810384608503016684779777053222700116315195254375795498763748283657366506219655212497335497<132> × [314085811625165686634137607616589650246639117208456451103884435492197914821877426858757426350794783329382156547858662922127630168647976385087739218032983761705998826201013522177055296489977504534546041068939583<210>] |