Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 332: | \[2^{332}-1\] | 3 × 5 × 167 × 499 × 997 × 1163 × 2657 × 155377 × 13063537 × 13455809771<11> × 46202197673<11> × 209957719973<12> × 148067197374074653<18> × 57912614113275649087721<23> |