Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 321: | \[{5^{321}-1\over4}\] | 31 × 6421 × 35311 × 80251 × 3482851 × 5486016363791<13> × 35411885288978941<17> × 172163150940018661<18> × 717433171088016374418821<24> × 204438681420686525733014991351502624422714996979<48> × 6072405960874948224658766406915570142830900385022525392267288527692798450876668755709<85> |