Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 297: | \[{5^{297}-1\over4}\] | 19 × 31 × 109 × 199 × 271 × 829 × 4159 × 31051 × 143551 × 1049599 × 1731511 × 12207031 × 386478495679<12> × 22542470482159<14> × 153560376376050799<18> × 1730583185128108939<19> × 101367829967676409195407966079<30> × 3543924987113810605145930002882747298117227864243768950135267181263023179<73> |