Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 779: | \[2^{779}-1\] | 1559 × 13367 × 524287 × 3142487 × 21726311 × 164511353 × 104003232119<12> × 164597693569197241<18> × 202664437974567925010435751833<30> × 539043252861508730639718553683237826728217905315243065969<57> × 13854484443712514445168803810885340128909905014273691033212675405002546908076327641519<86> |