Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 301: | \[{18^{301}-1\over17}\] | 431 × 449 × 57793 × 80207 × 31930081 × 35720273 × 4464951753212028068412713<25> × 28971751902509263440682681<26> × 1090210419512652527478200753229531839<37> × [280122082220400914151072701697962924210916858268468984131958302803037297637575744671836743024364674080901626684789184370374881911520881963922384139564909537782709565857405651116481130051967510830309810093022935454740321061305572855547123935129218002563114865249<261>] |