Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 609: | \[{20^{609}-1\over19}\] | 292 × 59 × 71 × 349 × 421 × 929 × 8179 × 10789 × 32719 × 143609 × 460951 × 564979 × 1177459 × 466307299 × 8442733531<10> × 71353204641689<14> × 7211823817586646406009<22> × 416342986893831527394682060819665340624809379247669<51> × 3605403851353821123741083595382953185544609831777342451<55> × 143898718736967326644103759009524395515229793952770451037038868341<66> × 204576949613262569842922274426200752428775161825247204534907214162447891577218079001650264666147359641<102> × [20429396562211494990528795117354898752348334128041629124984975651612795029279085553443780731492572721629732564415208117227932994485622057060650240798536452501044546376573559745810704339476982618821615880503199731175061866609883073385642377350281308923667668756116772648590248958176590471387101416870111012203392109891491031914140885662957704327201865204072204354997526239365619819531410686271472793597875768108976269<416>] |