Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 219: | \[2^{219}-1\] | 7 × 439 × 3943 × 2298041 × 9361973132609<13> × 671165898617413417<18> × 4815314615204347717321<22> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 219: | \[2^{219}-1\] | 7 × 439 × 3943 × 2298041 × 9361973132609<13> × 671165898617413417<18> × 4815314615204347717321<22> |