Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 198: | \[{18^{198}-1\over17}\] | 73 × 19 × 23 × 67 × 73 × 199 × 307 × 991 × 16127 × 25939 × 34327 × 51217 × 465841 × 536801 × 3611719 × 6301307 × 8481331 × 4893407785654797223<19> × 7741563936876515923<19> × 2126524541648886863763049<25> × 12042065697120681040605799<26> × 114892149709585452397582439337260631485522971<45> × 117206168731902676796790484884706056816111011068777<51> |