Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 264: | \[{18^{264}-1\over17}\] | 52 × 73 × 13 × 19 × 23 × 67 × 89 × 113 × 199 × 229 × 307 × 457 × 929 × 1321 × 16127 × 16369 × 21649 × 25939 × 48049 × 51217 × 519553 × 536801 × 1392733 × 6301307 × 36309857 × 63778177 × 1527087937 × 11019855601<11> × 55547468813<11> × 2570735949673<13> × 8941138915237<13> × 7227531624968689<16> × 6489496006585655053<19> × 7741563936876515923<19> × 49123471916529578833<20> × 12042065697120681040605799<26> × 206744368238633749680237203768363213057<39> × 2854414442673942221710614468000040459705393<43> |