Base 16 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 521: | \[{16^{521}-1\over15}\] | 16673 × 501203 × 89353834081<11> × 443418473521<12> × 627186185377<12> × 29325513271841158911701<23> × 37456492962964173214784249<26> × 90268296000189649868678102552775904610963<41> × 165579761151312296194143400514087991002119216371476353<54> × 792939861810098882080957595861772954608157832115769916382613442779177288529000957439117<87> × 69942606743667323359831455665538654122351296133781405313574467496259670721868759285318910517215429<98> × 114062739354387553292910924965889823099187127149057482935407583490192322022502109238664809064671779<99> × 6864797660130609714981900799081393217269435300143305409394463459185543183397656052122559640661454554977296311391480858037121987999716643812574028291115057151<157> |