Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 333: | \[{5^{333}-1\over4}\] | 19 × 31 × 149 × 829 × 3109 × 15319 × 344145511 × 13971969971<11> × 8737481256739<13> × 54928520946880307112306785731407655242899973469<47> × 11071665290671449530331408923856186107268916092023773607149<59> × 161379125529070529363563940022253349040025051224249445378347584044584532201078261<81> |