Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 367: | \[2^{367}-1\] | 12479 × 51791041 × 78138581882953<14> × 301311116540899114446723859201<30> × 19755740081951910036006278827509875120092863638283602681<56> |