Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 558: | \[{28^{558}-1\over27}\] | 32 × 192 × 29 × 37 × 127 × 271 × 373 × 757 × 1117 × 1303 × 2791 × 10789 × 47431 × 102547 × 220411 × 444979 × 1675799 × 9651727 × 14307617 × 310636369 × 68690971367<11> × 212792861971<12> × 2222222702307007<16> × 104175305182941687128096479<27> × 280321817417013527271954418037<30> × [2505424903742277954916693448546326427248916402182309690494779855591862640006206226955469538155758077646237297101522632231234707807590723164202109219922096672504108607323493460128213638936500737691968890972331761096372152672337502279138701514136808541556449135731631258987594315078995092316255678710346627114835424757800340497578174992324537547110268988598979568693676913694674997193112518280427891088159962922546754176610146546027690741619896817870809429524253375439199093811849198591995518782096292114594630933290831708820708605315679746100896784089991033492724473878969832730204326457450626070284161358499928323848654489713735539521<634>] |