Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 432: | \[{18^{432}-1\over17}\] | 52 × 73 × 13 × 19 × 372 × 73 × 97 × 109 × 113 × 229 × 307 × 433 × 457 × 577 × 929 × 991 × 1153 × 2593 × 3889 × 23761 × 25309 × 34327 × 196993 × 253369 × 293329 × 465841 × 771877 × 1464049 × 2474209 × 3711529 × 4464073 × 8640109 × 33388093 × 113607841 × 126001657 × 583293313 × 11019855601<11> × 31865908033<11> × 42569092513<11> × 1234749313729<13> × 1756243511461<13> × 137719530749377<15> × 994416129981667873<18> × 6672771423562679212753<22> × 16297894989684166066993<23> × 226491010090613984594176243921<30> × 1338258845052393545608356556801<31> × 3121305456784833993911822639198925029281<40> × 71508588065356585779469876164482958188248890676031000218163640679470604427229901284306822945102677555989270678413061422593848790821203630110029220895760324801<158> |