Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
341: | \[{3^{341}-1\over2}\] | 23 × 683 × 3851 × 4093 × 102673 × 4404047 × 9484546040170844481070590623<28> × 2350873793983578358677275363021178433652857323076409602568001640590345576853011759823184766247057387359503988371<112> |