Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 188: | \[2^{188}-1\] | 3 × 5 × 283 × 2351 × 3761 × 4513 × 13264529 × 7484047069<10> × 165768537521<12> × 140737471578113<15> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 188: | \[2^{188}-1\] | 3 × 5 × 283 × 2351 × 3761 × 4513 × 13264529 × 7484047069<10> × 165768537521<12> × 140737471578113<15> |