Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 456: | \[{31^{456}-1\over30}\] | 27 × 3 × 72 × 13 × 192 × 37 × 191 × 229 × 331 × 409 × 457 × 571 × 1129 × 1217 × 4903 × 7639 × 14251 × 451441 × 921121 × 922561 × 1553023 × 23126269 × 53489941 × 63147793 × 150718033 × 249613717 × 2491389137 × 99253763473<11> × 852890113921<12> × 36068660903683<14> × 98595072158281<14> × 306232251849987913<18> × 1348915338405903577<19> × 88770666332610762169<20> × 3545592640701962728192781<25> × 130154580611883020628409201<27> × 320412322755203944285620001<27> × 35362755128281368537612757051<29> × 1716439847900062900800798410166938893<37> × 1434879358379433691210638778172176147818557361098186883210580561<64> × 2612027945358300413754297391088222539301391925168372708280811117128401578270356249282344657<91> × [639548198192231294587841028311866368998380085126096682245581980153374802270532984416839817016019289310223784903334947831137043686492824826269588974756384493763089<162>] |