Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 506: | \[{3^{506}-1\over2}\] | 22 × 232 × 47 × 67 × 661 × 3851 × 7591 × 1001523179 × 23535794707<11> × 25918707093150367<17> × 38636905168680714294388463<26> × 694795605450302885931482069023906496640308871072578393444435496767723247212161<78> × 6276246585993244673433656510370073323920470321481093106313258644236138754388405068097<85> |