Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 427: | \[{3^{427}-1\over2}\] | 1093 × 603901 × 98386025627<11> × 562686760931<12> × 84404570448444086183953<23> × 105293313660391861035901<24> × 3556068841871225054499505739<28> × 232928605799657114275356976932404900444910130898191449350311920826630049681793160518921895694348819<99> |