Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 390: | \[{3^{390}-1\over2}\] | 22 × 7 × 112 × 132 × 31 × 61 × 79 × 131 × 157 × 271 × 313 × 2341 × 2887 × 4561 × 6553 × 7333 × 10141 × 398581 × 797161 × 3701101 × 39838501 × 419437201 × 54975287251<11> × 3785998525531<13> × 56919999055921<14> × 110133112994711<15> × 105919308797935444986721<24> × 98139929939748977208994554331725481<35> |