Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 267: | \[{20^{267}-1\over19}\] | 179 × 421 × 19759 × 20681821 × 24030001 × 335939325419<12> × 1547547240361<13> × 847721350743859<15> × 133724350874825473368329<24> × 261786786940548104294757775699593263493783883864102345432362297509<66> × [1093192103009155275756852787825514594387449735561321566774877460848908772401940951902712409023876503670126426256840870032846012991767805418480427815136016404578162168273679572150020860898077130581<196>] |