Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 496: | \[{28^{496}-1\over27}\] | 5 × 17 × 29 × 157 × 1303 × 10789 × 17981 × 614657 × 1675799 × 9264041 × 14307617 × 32660609 × 55282673 × 187470641 × 5169432529<10> × 17821202129<11> × 22223646961<11> × 68690971367<11> × 41183608552636142233<20> × 133498169084170444144561<24> × 104175305182941687128096479<27> × 280321817417013527271954418037<30> × 86548101993906356734139321964429422523637841<44> × 1592340800012622170002135801379339422838859913<46> × 27884686722505100360091725592256555804932742636659265933<56> × 368546998982636300658549673875707774050955110987978355647553<60> × [1580979297575717712022671164721355946508449074017572476967444064495747418819504672433293389360085551971455232924922487784859595191805422896283052240245182667502061363165631568288200711437673121614153709806369362638333312325553976846867652309356278420123867567413636201129241868881463705161235196786235971473<307>] |