Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 241: | \[{18^{241}-1\over17}\] | 50129 × 618812092231<12> × 1125956161377367<16> × 3458606457905369863<19> × 109368553729987281473<21> × [1476596642997556676949933674891444457689546466478846306319040642001170941885340024353449606193309716148187940265120212094728628795649587276215610603577332019282774891402465537480469342376301807377223922258148627311924889955131954953<232>] |