Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 126: | \[{18^{126}-1\over17}\] | 74 × 19 × 43 × 73 × 127 × 307 × 449 × 631 × 991 × 2143 × 34327 × 46747 × 80207 × 465841 × 1292257 × 32222107 × 337268233 × 607371619 × 156107192084257<15> × 6974796889885559915764172408527<31> × 4591020241431358911787281317666857153<37> |