Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 895: | \[2^{895}-1\] | 31 × 359 × 1433 × 21481 × 6917353530526492681<19> × 78961972629651529859281<23> × 380175443574763153088777745842279962515778711<45> × 1489459109360039866456940197095433721664951999121<49> × 1696067654151459074824290253436397570222341162468471<52> × 1469858445003146449098764792932819841831626969291017637154102921731006991<73> |