Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 672: | \[{7^{672}-1\over6}\] | 27 × 3 × 52 × 13 × 17 × 19 × 29 × 43 × 73 × 97 × 113 × 181 × 193 × 337 × 353 × 409 × 449 × 673 × 911 × 1201 × 2129 × 3361 × 4733 × 51031 × 121633 × 169553 × 309079 × 517553 × 39648001 × 104837857 × 515717329 × 11898664849<11> × 13564461457<11> × 47072139617<11> × 4894546210513<13> × 21535258550401<14> × 33232924804801<14> × 142256806230113<15> × 108604397663266369<18> × 334224081623006401<18> × 195489390796456327201<21> × 2232059760329037670187857<25> × 8636794070026393288992369697<28> × 3836809130621025938778530947201<31> × 27447194849244194531582120774054932805666322241<47> × 8309130488800313532095736195499153284909088135172285761<55> × 7957380732855482507682110504474573599923935067074217128707201<61> × 1347137238494236011616409424554801312589016593551210172009792771818298600357148801<82> |