Base 32 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 121: | \[{32^{121}-1\over31}\] | 23 × 89 × 727 × 881 × 3191 × 3631 × 201961 × 143448045841<12> × 1786393878363164227858270210279<31> × 5448351236315742026827470749290138552538510376598571254569437566703575251869691806410089694456327608528590739813981151<118> |