Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 583: | \[2^{583}-1\] | 23 × 89 × 6361 × 69431 × 755569 × 20394401 × 65780528969<11> × 106077807287<12> × 325674558237213843009398640373206811523481318364207856820688899521108980300567959203223587876391251739969658077488747289524075713<129> |