Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 225: | \[{5^{225}-1\over4}\] | 11 × 19 × 31 × 71 × 101 × 151 × 181 × 251 × 401 × 829 × 1171 × 1741 × 3301 × 169831 × 1274851 × 1989151 × 9384251 × 49892851 × 183794551 × 297315901 × 1086749551 × 1390332823651<13> × 489346511141264975761501<24> × 798134988394850122586201262390451<33> |