Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 471: | \[2^{471}-1\] | 7 × 852133201 × 60726444167<11> × 1654058017289<13> × 2134387368610417<16> × 4767828205180602862488887736985607398666751166000769605012698283856806259916006281652253453751<94> |