Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 305: | \[{18^{305}-1\over17}\] | 41 × 2711 × 366001 × 367831 × 28046945819441<14> × 4110876980385153863<19> × 107508304778622281241241<24> × 12051545770317059234807079730391<32> × 1450744996988333189921892673782384233809551686747567<52> × 1308353965477068502951717372930838942138419838296525913500788256921335386160036178470946678242725236140976184171871754685495493205677730297967857094362272704731174174482072705539614291624525460534974983492391262429310864796067281<229> |