Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 279: | \[{18^{279}-1\over17}\] | 73 × 311 × 991 × 12959 × 34327 × 52081 × 136711 × 207073567873<12> × 1276827537047<13> × 9365578696924149281<19> × 2031563183945918294071<22> × 361794341647699905505399<24> × 51124582874452705456885351<26> × [314085811625165686634137607616589650246639117208456451103884435492197914821877426858757426350794783329382156547858662922127630168647976385087739218032983761705998826201013522177055296489977504534546041068939583<210>] |