Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 833: | \[2^{833}-1\] | 127 × 239 × 20231 × 131071 × 62983048367<11> × 131105292137<12> × 4432676798593<13> × 14821647473599<14> × 2394594520709878135254356190088519028761<40> × 794769178865803830796254438307018567389833<42> × 16248173432447880508878672460681334430321473<44> × 42420600363330178721105990246386975306561768489516913832364096351<65> |