Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 392: | \[{15^{392}-1\over14}\] | 26 × 72 × 17 × 29 × 113 × 197 × 1489 × 883471 × 1743463 × 5706541 × 10164071 × 10678711 × 25036159 × 35549599 × 270420221 × 334949497 × 93589065767<11> × 163847203717<12> × 766028506097<12> × 4175288799599<13> × 4454215139669<13> × 51118533330313<14> × 83059733354921<14> × 1716116764931059<16> × 21975395880100433<17> × 14675999570738648605387<23> × 3751296934950580261070021<25> × 3723969549545608052016408109332599357763048200353999933<55> × 1511126503530090787275447940380762008410820108487446518167836449<64> × 178271718659429953424580604314670335953111577590226098688199208349856640963554384772971461878334329<99> |