Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 720: | \[{15^{720}-1\over14}\] | 27 × 11 × 13 × 17 × 19 × 31 × 37 × 41 × 61 × 73 × 113 × 181 × 211 × 241 × 541 × 739 × 811 × 991 × 1201 × 1361 × 1489 × 1531 × 3169 × 3877 × 4931 × 7121 × 17761 × 19231 × 19421 × 21061 × 24481 × 27361 × 33601 × 47701 × 131381 × 142111 × 179953 × 278041 × 318601 × 1659649 × 1877761 × 2568061 × 39225301 × 706195561 × 964764793 × 1248882721 × 2414458561 × 2562840001 × 2911460401 × 13535373521<11> × 329380317601<12> × 3506657472973<13> × 9763752384289<13> × 22802175491041<14> × 133390439104361<15> × 138711479680351<15> × 284867992707121<15> × 105091981250955481<18> × 1076233596845085335953<22> × 29939982202071965036641<23> × 1006101271862820362016481<25> × 2342027117915665091812321<25> × 2907052472739605948143921<25> × 92978587355640205970336221<26> × 100519676708380742147333029784121601<36> × 263313962934440595404544244704389617<36> × 281914370177292100360426939815282526394102460657245868911413686371961661773275106083267343034019281<99> × 10337451590842104951552942423283377596755182340683371909178071817859918049733177429382654898107224585212776468618204160687400999980134959904829383203832752829667942552959144873161719180668985387551917617467201<209> |