Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 468: | \[{18^{468}-1\over17}\] | 52 × 73 × 132 × 19 × 372 × 53 × 73 × 79 × 131 × 157 × 229 × 307 × 313 × 457 × 521 × 937 × 991 × 2081 × 6553 × 21997 × 25309 × 27847 × 34327 × 108109 × 465841 × 33388093 × 633420217 × 4020180841 × 5210864257<10> × 5601346141<10> × 7424759473<10> × 29759719289<11> × 33968820133<11> × 786564396307<12> × 15715445027621<14> × 454154940405739<15> × 1993017556871641<16> × 378176116650387589<18> × 581721119015050561<18> × 170258429679493134487<21> × 7035278398590069608527<22> × 12060074821194002629696165393<29> × 641429479111511923829901933913<30> × 1412364383703504438982118048251<31> × 8565813328507460842427312911842673<34> × 15890181189699426496015581985897729<35> × 74793876992417002436689782022746676840621<41> × 999528789074985233712133564470395480495929<42> × 6710525042135192981329116141673131618207434948646727670289592537<64> |