Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 953: | \[2^{953}-1\] | 343081 × 562070136841<12> × 40496650491842199555367<23> × 824501439026637805612489876810823<33> × 210604142476977747806569755290105170291449495120790656457721<60> × 56146314991766082642632333152948275734351103326267414763284183801470126295704742512515549544592611827818875529505418937287624990432022105096260880089208311<155> |