Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 550: | \[{28^{550}-1\over27}\] | 112 × 232 × 29 × 151 × 15101 × 53951 × 106801 × 637421 × 2606251 × 6077039 × 50545507 × 1466198801 × 6813064001<10> × 7984305701<10> × 16071033331<11> × 66344748251<11> × 170176961351<12> × 346438463911<12> × 540610746853<12> × 829366011211<12> × 9422613622951<13> × 94275090945167441<17> × 218642118741565201<18> × 5906633396655970661<19> × 222929435014083414901<21> × 69306675737281627293003851<26> × [645913688348078708472432405971515379980562435323882807656413246342606280516152967444374070109898211405184923999005800941051114263191196311343688853736647896235867359502094515161125919963459324305695895996746438149903111698211045721975881838851491321275002997134829205536817776037709469591018495849067959999932744747354884213068891921800898331660795689674272686464134007920373673756419560759156205203116717765635045357671763930695981614310757387194064976413969606097061869029107600237062419651673698873181565875751177041669051311209578841<537>] |