Base 6 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 640: | \[{6^{640}-1\over5}\] | 5 × 7 × 11 × 17 × 37 × 41 × 101 × 241 × 311 × 353 × 641 × 1297 × 1697 × 2753 × 6781 × 9601 × 17761 × 82241 × 98801 × 145601 × 4709377 × 6827521 × 3696985841 × 4926056449<10> × 68754507401<11> × 121206120881<12> × 2810800069601<13> × 621432697463041<15> × 19854979505843329<17> × 447183309836853377<18> × 1743036582663429761<19> × 2480431288764419201<19> × 28753787197056661026689<23> × 15954097282309262360999041<26> × 2347110840158563816028186318246561<34> × 4903626466768570999224738379365121<34> × 623565458885624857143366973953113921<36> × 1368898414486262109401696655655550883408427025048477373554452955247577259433730000421404784683895521826438076751995982861272324125006250881<139> |