Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 483: | \[{20^{483}-1\over19}\] | 29 × 71 × 139 × 421 × 691 × 1381 × 4831 × 32719 × 460951 × 737059 × 8442733531<10> × 119553964489<12> × 53256918961009<14> × 113317059163579<15> × 147667502589881<15> × 46266279097921483078651<23> × 887612944642122132741202450909<30> × 657691252165510493074624994632492243498673308228545296980038834474336097170339517449163138480478010357544188164791431526046700863719160527514789<144> × [8761968113756150592502760639199686793050493447923311054958334522496592054682788687867336772462538311292506747988680986407143084621851079931553111371634717070556397190016065670310028184290842474615920370748626685007575944471491709287294874772248088656219571805956301161224881237364717601669942905793763805559094006723555155798555039049<334>] |