Base 16 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 660: | \[{16^{660}-1\over15}\] | 3 × 5 × 7 × 112 × 13 × 17 × 23 × 31 × 41 × 61 × 67 × 89 × 97 × 151 × 241 × 257 × 331 × 353 × 397 × 661 × 673 × 683 × 881 × 1321 × 2113 × 2971 × 3191 × 3301 × 5281 × 7393 × 8581 × 20857 × 47521 × 61681 × 109121 × 148721 × 201961 × 229153 × 312709 × 599479 × 4327489 × 14736481 × 48912491 × 89119361 × 119782433 × 394783681 × 415365721 × 1761345169 × 2931542417 × 3404676001 × 4278255361 × 4562284561<10> × 43872038849<11> × 46908728641<11> × 98618273953<11> × 391249826881<12> × 415878438361<12> × 514210163281<12> × 3630105520141<13> × 11035465708081<14> × 12127627350301<14> × 13379250952981<14> × 2252127523412251<16> × 2546717317681681<16> × 16875081675650881<17> × 2048568835297380486760231<25> × 649817602852289358605542163521<30> × 86945388997210442828259494992321<32> × 127886114126296744221796660380215073025601<42> × 3959230115153309849247403143218625469852321<43> × 408366574882937448121335727135953165832656645121<48> × 860573414369008969457638101533827364704684164286188824383996871471626764468219429432850649798234488791036977295952185305281368586922360240161830570497885830241813162641447900350702795124321<189> |