Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 288: | \[{18^{288}-1\over17}\] | 52 × 73 × 13 × 19 × 372 × 73 × 97 × 113 × 193 × 229 × 307 × 457 × 577 × 929 × 991 × 1153 × 25309 × 34327 × 465841 × 2474209 × 33388093 × 113607841 × 3930785153 × 11019855601<11> × 30894471809<11> × 41448704449<11> × 42569092513<11> × 994416129981667873<18> × 1843537150504780075063108993<28> × 1338258845052393545608356556801<31> × 3121305456784833993911822639198925029281<40> × 3207454393647280317286433354023821612012319914228749880471258351766932789802694604079650287187553670123907384142410547201<121> |