Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 242: | \[{15^{242}-1\over14}\] | 24 × 23 × 67 × 463 × 2333 × 7019 × 8537 × 4382602577<10> × 23504771357<11> × 464576202822601<15> × 60966770930329903<17> × 76328847637019944306129930054615472720807<41> × 5627184418701839214950691388503744769436522116776893<52> × 973596293359690050660589564381789969621086099491919940801<57> × 15085535828133019058249267286952882556316220621121108726755377109<65> |