Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 196: | \[{15^{196}-1\over14}\] | 25 × 72 × 29 × 113 × 197 × 883471 × 1743463 × 5706541 × 10164071 × 10678711 × 25036159 × 35549599 × 270420221 × 93589065767<11> × 163847203717<12> × 4175288799599<13> × 4454215139669<13> × 1716116764931059<16> × 14675999570738648605387<23> × 3751296934950580261070021<25> × 3723969549545608052016408109332599357763048200353999933<55> |