Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 186: | \[{28^{186}-1\over27}\] | 3 × 29 × 271 × 373 × 757 × 1117 × 1303 × 10789 × 1675799 × 14307617 × 68690971367<11> × 2222222702307007<16> × 104175305182941687128096479<27> × 88371476775688842981939845083<29> × 280321817417013527271954418037<30> × 9751283154942605850592828466642659513447<40> × 160281583784620677280319713020603382697107<42> × 3561249252745146135588629593555258264097689<43> |