Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 50: | \[{10^{50}-1\over9}\] | 11 × 41 × 251 × 271 × 5051 × 9091 × 21401 × 25601 × 182521213001<12> × 78875943472201<14> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 50: | \[{10^{50}-1\over9}\] | 11 × 41 × 251 × 271 × 5051 × 9091 × 21401 × 25601 × 182521213001<12> × 78875943472201<14> |