Base 26 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
65: | \[{26^{65}-1\over25}\] | 5 × 11 × 8641 × 10271 × 27764777 × 3574533119 × 7106335471<10> × 161404898442841<15> × 6768808917883938635656748396259804822671<40> |