Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 278: | \[{18^{278}-1\over17}\] | 19 × 766169 × 235241099 × 541014689 × 95799161123<11> × 1125273264569<13> × 143644541940923<15> × 3673904096631593189690128995143882476819326980784414950924123497<64> × 117426965980849393281569643757057004998889173896081274062492557449314233557358360862114890774959<96> × 43924069825323511629246610671900762271794972280779353522295358911923707663703625381882003481202385857582596238316911052617082793<128> |