Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 513: | \[{18^{513}-1\over17}\] | 73 × 991 × 6841 × 11287 × 23761 × 34327 × 253369 × 1464049 × 4464073 × 40027681 × 187158817 × 326957473 × 1288363483639<13> × 6089884909802812423<19> × 109030539183149105839<21> × 1135070056132121343004681823047441<34> × 850055902813968541409600883736115090563046973702148574915582901003301985930964971268843955736958978138704311<108> × [73962497715801278115264012806448837987305453517891963896103912750422136524282743641036433288721545924578885840137282616399635373797674308427359252967708862071391269295213287861322263519647812210002825436120566890898103536161054197657159157132977003276124171649845552766369745730883535589901478281234232466599379813545083199046672557511127892271200743405931233722210494956142312627449447<386>] |