Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 787: | \[2^{787}-1\] | 9951597611230279<16> × 96512008100928793<17> × 171124793552074153093621463907993111755630713094272377046079303<63> × 4952443062243070276982618235553391899025005974177841614150652967038194584843406813849759422158280687571671371337185220166834929387719842135047<142> |