Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 205: | \[{28^{205}-1\over27}\] | 83 × 821 × 637421 × 801469 × 32512427 × 147549161 × 150325247041<12> × 13576517303213461<17> × 4495294535482012470972518309284152114589<40> × [11239156659846783340306309933813041331769877687791396849743212840530426964771391618369450661366127685397400413004377539668917363010340141999345315225021281753842855100313920921140252037514152604841<197>] |