Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 718: | \[2^{718}-1\] | 3 × 719 × 855857 × 778165529 × 3536450843 × 1110671633637523<16> × 65877330027880703<17> × 194193974563158088483<21> × 370906580744492785430299503112990447<36> × 100361196281293745682520861860411315001<39> × 513166304713999751217560795536588367248925043527782042775106649<63> |