Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 271: | \[2^{271}-1\] | 15242475217<11> × 248927757868131890277330541567820045256364273970773286542188386932989391<72> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 271: | \[2^{271}-1\] | 15242475217<11> × 248927757868131890277330541567820045256364273970773286542188386932989391<72> |