Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 416: | \[{28^{416}-1\over27}\] | 5 × 17 × 29 × 53 × 97 × 157 × 547 × 1249 × 2237 × 114661 × 614657 × 1598039 × 2012449 × 4338337 × 168542177 × 11065075009<11> × 22223646961<11> × 78296083533149<14> × 4543753614603737<16> × 300379699866544897<18> × 687858517721621226917<21> × 19789341205087347551633<23> × 283501771410663683568913<24> × 3398337641329450355189472420954977<34> × 855693576641214248819061279848193953<36> × 6934739468477728962854366525620987937<37> × 912733575646067804541998667318264025954769<42> × 1651352805812825592233615129508988868059423546050961<52> × [2483844984854801608406554487836602220826518736309335735854921352333855495616935327046114242555312253545605228819213925698155036700580787607777654483912827151823388708527091317665474490775397349470031504014440129<211>] |