Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 220: | \[{22^{220}-1\over21}\] | 52 × 23 × 67 × 89 × 97 × 181 × 331 × 353 × 401 × 661 × 118361 × 150901 × 224071 × 245411 × 1176469537 × 1827441881 × 2706385001 × 3814150121 × 285451051007<12> × 1357357714241<13> × 9617835527609<13> × 73194743542229<14> × 450985752788585144681<21> × 800559090118463536552561<24> × 141621245800930653894440041701151<33> × 149180415247294012466248136626713442468601<42> × 12124596978055103279634838475418155930577319721<47> |