Base 26 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
131: | \[{26^{131}-1\over25}\] | 263 × 1049 × 3407 × 19225561 × 92420978457847643<17> × 5505739026318436931564757888163319734016846223776019458942018730684890870061721813994734811115954826482875072393826930966181712216066914532179556556733<151> |