Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 222: | \[{31^{222}-1\over30}\] | 25 × 3 × 72 × 19 × 149 × 223 × 331 × 2221 × 4219 × 4441 × 15541 × 2338549 × 152597832677<12> × 257803457371<12> × 386626708057<12> × 52812493022953<14> × 206950171739821<15> × 29883177024083137<17> × 969963587051157584202299<24> × 488064548082098022956156062559<30> × 914842491957911271373186499551<30> × 1888865220140266336435236521617027<34> × 66685632043094378655582637553641418149167535516828458801415092872326088347774211129187093655702612867<101> |