Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
262: | \[{5^{262}-1\over4}\] | 2 × 3 × 263 × 2621 × 23928199 × 34720241 × 16815642611861<14> × 250805666433416532678429525124977090318975999001796354124089<60> × 23278959735865959837783914314445613074672559346722265555860894056527591481597100222820867<89> |