Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 783: | \[{8^{783}-1\over7}\] | 73 × 233 × 1103 × 1567 × 2089 × 2593 × 4177 × 71119 × 262657 × 97685839 × 9857737155463<13> × 115325777306552599<18> × 362753554205520179263<21> × 411529933197998798533065124543<30> × 602999957032279571271592229136193<33> × 1345967414522954303164296915490846371433<40> × 328017025014102923449988663752960080886511412965881<51> × 41100578385770666334376636934095140722443159255961483460436653394844713097287<77> × [8344761798434498797412005333439073622518999479962674497570611541916200324295523535787674396612544582279879650970122767353895153410183132300565976944231424624254229733983114149049000668742055396085184153897877359341152112081534935262497925871308636710028402574340807030276473885245794161385649326640611094695716951219490444533760677992624761260365494119197781193293437590173495347880709031<388>] |