Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 164: | \[{18^{164}-1\over17}\] | 52 × 13 × 19 × 83 × 168347 × 3811279 × 114341047 × 4354359491<10> × 24997711153<11> × 101230436110007637061337<24> × 394867037344695962525971723264825927<36> × 117012619172903468336363755054149226979817746816041<51> × 225024267640198977569930286413453544441731198242501<51> |