Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 93: | \[{7^{93}-1\over6}\] | 3 × 19 × 311 × 21143 × 5463751 × 2211164386353499<16> × 3999088279399464409<19> × 36148617745189465516342817701<29> |