Base 11 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 220: | \[{11^{220}-1\over10}\] | 23 × 3 × 5 × 23 × 61 × 89 × 199 × 3221 × 4951 × 13421 × 15797 × 25301 × 39161 × 58367 × 251857 × 411841 × 1327481 × 1806113 × 212601841 × 21537414911<11> × 85480219991<11> × 131525983711<12> × 36318547582241<14> × 110374378040081<15> × 643170158708221<15> × 2649263870814793<16> × 645654335737185721<18> × 136371262802069831801<21> × 284604233173679136521738352001<30> |